CVE-2020-26558 (GCVE-0-2020-26558)

Vulnerability from cvelistv5 – Published: 2021-05-24 17:22 – Updated: 2025-11-04 19:12
VLAI
Summary
Bluetooth LE and BR/EDR secure pairing in Bluetooth Core Specification 2.1 through 5.2 may permit a nearby man-in-the-middle attacker to identify the Passkey used during pairing (in the Passkey authentication procedure) by reflection of the public key and the authentication evidence of the initiating device, potentially permitting this attacker to complete authenticated pairing with the responding device using the correct Passkey for the pairing session. The attack methodology determines the Passkey value one bit at a time.
Severity
4.2 (Medium)
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE
  • n/a
Assigner
References
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-04T19:12:18.753Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://kb.cert.org/vuls/id/799380"
          },
          {
            "name": "FEDORA-2021-a35b44fd9f",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NSS6CTGE4UGTJLCOZOASDR3T3SLL6QJZ/"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00520.html"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00517.html"
          },
          {
            "name": "[debian-lts-announce] 20210623 [SECURITY] [DLA 2689-1] linux security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html"
          },
          {
            "name": "[debian-lts-announce] 20210623 [SECURITY] [DLA 2690-1] linux-4.19 security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html"
          },
          {
            "name": "[debian-lts-announce] 20210626 [SECURITY] [DLA 2692-1] bluez security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/06/msg00022.html"
          },
          {
            "name": "DSA-4951",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2021/dsa-4951"
          },
          {
            "name": "GLSA-202209-16",
            "tags": [
              "vendor-advisory",
              "x_refsource_GENTOO",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202209-16"
          },
          {
            "url": "https://www.kb.cert.org/vuls/id/799380"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Bluetooth LE and BR/EDR secure pairing in Bluetooth Core Specification 2.1 through 5.2 may permit a nearby man-in-the-middle attacker to identify the Passkey used during pairing (in the Passkey authentication procedure) by reflection of the public key and the authentication evidence of the initiating device, potentially permitting this attacker to complete authenticated pairing with the responding device using the correct Passkey for the pairing session. The attack methodology determines the Passkey value one bit at a time."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-09-29T16:07:24.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://kb.cert.org/vuls/id/799380"
        },
        {
          "name": "FEDORA-2021-a35b44fd9f",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NSS6CTGE4UGTJLCOZOASDR3T3SLL6QJZ/"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00520.html"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00517.html"
        },
        {
          "name": "[debian-lts-announce] 20210623 [SECURITY] [DLA 2689-1] linux security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html"
        },
        {
          "name": "[debian-lts-announce] 20210623 [SECURITY] [DLA 2690-1] linux-4.19 security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html"
        },
        {
          "name": "[debian-lts-announce] 20210626 [SECURITY] [DLA 2692-1] bluez security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2021/06/msg00022.html"
        },
        {
          "name": "DSA-4951",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "https://www.debian.org/security/2021/dsa-4951"
        },
        {
          "name": "GLSA-202209-16",
          "tags": [
            "vendor-advisory",
            "x_refsource_GENTOO"
          ],
          "url": "https://security.gentoo.org/glsa/202209-16"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2020-26558",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Bluetooth LE and BR/EDR secure pairing in Bluetooth Core Specification 2.1 through 5.2 may permit a nearby man-in-the-middle attacker to identify the Passkey used during pairing (in the Passkey authentication procedure) by reflection of the public key and the authentication evidence of the initiating device, potentially permitting this attacker to complete authenticated pairing with the responding device using the correct Passkey for the pairing session. The attack methodology determines the Passkey value one bit at a time."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/",
              "refsource": "MISC",
              "url": "https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/"
            },
            {
              "name": "https://kb.cert.org/vuls/id/799380",
              "refsource": "MISC",
              "url": "https://kb.cert.org/vuls/id/799380"
            },
            {
              "name": "FEDORA-2021-a35b44fd9f",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NSS6CTGE4UGTJLCOZOASDR3T3SLL6QJZ/"
            },
            {
              "name": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00520.html",
              "refsource": "CONFIRM",
              "url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00520.html"
            },
            {
              "name": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00517.html",
              "refsource": "CONFIRM",
              "url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00517.html"
            },
            {
              "name": "[debian-lts-announce] 20210623 [SECURITY] [DLA 2689-1] linux security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html"
            },
            {
              "name": "[debian-lts-announce] 20210623 [SECURITY] [DLA 2690-1] linux-4.19 security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html"
            },
            {
              "name": "[debian-lts-announce] 20210626 [SECURITY] [DLA 2692-1] bluez security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2021/06/msg00022.html"
            },
            {
              "name": "DSA-4951",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2021/dsa-4951"
            },
            {
              "name": "GLSA-202209-16",
              "refsource": "GENTOO",
              "url": "https://security.gentoo.org/glsa/202209-16"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2020-26558",
    "datePublished": "2021-05-24T17:22:16.000Z",
    "dateReserved": "2020-10-04T00:00:00.000Z",
    "dateUpdated": "2025-11-04T19:12:18.753Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2020-26558",
      "date": "2026-10-06",
      "epss": "0.00872",
      "percentile": "0.57536"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "n/a",
                "vendor": "n/a",
                "versions": [
                  {
                    "status": "affected",
                    "version": "n/a"
                  }
                ]
              }
            ],
            "source": "cve@mitre.org"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:bluetooth:bluetooth_core_specification:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "9856E3E9-B127-4CA2-A4E3-006EBEF3ADD8",
                    "versionEndIncluding": "5.2",
                    "versionStartIncluding": "2.1",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
                    "matchCriteriaId": "A930E247-0B43-43CB-98FF-6CE7B8189835",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "7ABDE34F-742E-4233-8C9C-599457807773",
                    "versionEndExcluding": "5.13",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:intel:ax210_firmware:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "2BA9E525-21D9-4B3E-85A2-63C7F01F7950",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:h:intel:ax210:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "F226D74C-4A48-4AC0-A565-A00D555E27D6",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:intel:ax201_firmware:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "4AAB385A-5D49-4CED-92BD-8E790F29DCED",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:h:intel:ax201:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "4649D446-130B-4B31-B9ED-BA7F9F7EEB8F",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:intel:ax200_firmware:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "1BECECBE-C8FC-4669-A5DF-22EF61449B1F",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:h:intel:ax200:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E9903E2E-A670-40D4-8B9F-D2C0CFDBFC9F",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:intel:ac_9560_firmware:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "7154EAF0-2E61-4813-B443-C4556137EB4D",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:h:intel:ac_9560:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "D382D4A1-C8FD-4B47-B2C4-145232EC8AC5",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:intel:ac_9462_firmware:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "D65359E2-1507-46F9-B259-7A75DF68EB34",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:h:intel:ac_9462:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "6E89EB0D-233A-486A-BDAE-F5726432CD7E",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:intel:ac_9461_firmware:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "EC15313E-27FB-470E-BB55-4A372B04864D",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:h:intel:ac_9461:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "A11E55E8-5FA9-4ED7-AB61-03F22EE1759B",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:intel:ac_9260_firmware:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E2915178-6BB6-45EE-A19D-EDB5B78F2BE2",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:h:intel:ac_9260:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "C2795E42-D044-4D48-BCB2-61CC1A3471B1",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:intel:ac_8265_firmware:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "1E5ADC21-F308-4CAA-8E98-4E7FDC7EDAAC",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:h:intel:ac_8265:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "C08E2F3E-C4B5-4227-A88D-C50E209A12CF",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:intel:ac_8260_firmware:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "28B0DBF3-63BB-40EF-9D46-E32D074D73DA",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:h:intel:ac_8260:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "B5A8F30C-6BB7-4CC6-ADBE-1859DAF66C58",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:intel:ac_3168_firmware:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E5199A11-AEAB-4110-A7F3-04239D35321F",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:h:intel:ac_3168:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "ED5B2BCE-2D8A-440C-B866-76E035314022",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:intel:ac_7265_firmware:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "7218FFF6-506E-45D7-9428-DDEACF4E5E1A",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:h:intel:ac_7265:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "8F9F1CE7-8F14-4526-A857-7B954EC4BB6F",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:intel:ac_3165_firmware:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "8D141E7D-2CC4-47E7-8EBD-E4653FAA5EEA",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:h:intel:ac_3165:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "197A3DA1-B8EF-438F-B933-32253C43C8EE",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:intel:ax1675_firmware:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "0DAB2B67-5C39-4438-8E36-3F740A697599",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:h:intel:ax1675:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "3F407ACA-0952-4717-A302-2D5CEB6DB111",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:intel:ax1650_firmware:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "B39FB813-1EC0-4B5C-B8CB-F5129DBF94C2",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:h:intel:ax1650:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E8B944F7-4A5F-41D0-A910-6F978F66CAA0",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:intel:ac_1550_firmware:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "A66D96C8-7C0D-4615-B825-A15DBB37B920",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:h:intel:ac_1550:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "12419474-DB56-462D-9116-3614A4BBAF20",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Bluetooth LE and BR/EDR secure pairing in Bluetooth Core Specification 2.1 through 5.2 may permit a nearby man-in-the-middle attacker to identify the Passkey used during pairing (in the Passkey authentication procedure) by reflection of the public key and the authentication evidence of the initiating device, potentially permitting this attacker to complete authenticated pairing with the responding device using the correct Passkey for the pairing session. The attack methodology determines the Passkey value one bit at a time."
          },
          {
            "lang": "es",
            "value": "El emparejamiento seguro de Bluetooth LE y BR/EDR en Bluetooth Core Specification versiones 2.1 hasta 5.2, puede permitir a un atacante de tipo man-in-the-middle cercano identificar el Passkey usada durante el emparejamiento (en el procedimiento de autenticaci\u00f3n de Passkey) mediante el reflejo de la clave p\u00fablica y la  evidencia de autenticaci\u00f3 del dispositivo de inicio, potencialmente permitiendo a este atacante completar el emparejamiento autenticado con el dispositivo que responde usando la contrase\u00f1a correcta para la sesi\u00f3n de emparejamiento.\u0026#xa0;La metodolog\u00eda de ataque determina el valor de la Clave un bit a la vez"
          }
        ],
        "id": "CVE-2020-26558",
        "lastModified": "2026-06-17T03:08:11.693",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "MEDIUM",
                "accessVector": "ADJACENT_NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "NONE",
                "baseScore": 4.3,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:A/AC:M/Au:N/C:P/I:P/A:N",
                "version": "2.0"
              },
              "exploitabilityScore": 5.5,
              "impactScore": 4.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "ADJACENT_NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 4.2,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 1.6,
              "impactScore": 2.5,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2021-05-24T18:15:07.930",
        "references": [
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory",
              "US Government Resource"
            ],
            "url": "https://kb.cert.org/vuls/id/799380"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/06/msg00022.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NSS6CTGE4UGTJLCOZOASDR3T3SLL6QJZ/"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://security.gentoo.org/glsa/202209-16"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.debian.org/security/2021/dsa-4951"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00517.html"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00520.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory",
              "US Government Resource"
            ],
            "url": "https://kb.cert.org/vuls/id/799380"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/06/msg00022.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NSS6CTGE4UGTJLCOZOASDR3T3SLL6QJZ/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://security.gentoo.org/glsa/202209-16"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.debian.org/security/2021/dsa-4951"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00517.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00520.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://www.kb.cert.org/vuls/id/799380"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-287"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T10:17:37+00:00",
      "cve": "CVE-2020-26558",
      "id": "CVE-2020-26558",
      "initial_release_date": "2020-01-01T00:00:00+00:00",
      "product_status:fixed": "171",
      "product_status:known_affected": "54",
      "product_status:known_not_affected": "164",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "bluez: Passkey Entry protocol of the Bluetooth Core is vulnerable to an impersonation attack",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-26558.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.