CVE-2026-24797 (GCVE-0-2026-24797)

Vulnerability from cvelistv5 – Published: 2026-01-27 08:25 – Updated: 2026-01-27 21:38
VLAI
Title
An out of bounds write due to a missing bounds check in neka-nat/cupoch
Summary
Out-of-bounds Write vulnerability in neka-nat cupoch (third_party/libjpeg-turbo/libjpeg-turbo modules). This vulnerability is associated with program files tjbench.C. This issue affects cupoch.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L/AU:Y/R:A/RE:M/U:Amber
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-27 21:09 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version
neka-nat cupoch Affected: 0 , < v0.2.11.0 (git)
Create a notification for this product.
Credits
TITAN Team (titancaproject@gmail.com)
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-24797",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-27T21:09:38.092555Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-27T21:38:37.425Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://github.com/neka-nat/cupoch",
          "defaultStatus": "affected",
          "modules": [
            "third_party/libjpeg-turbo/libjpeg-turbo"
          ],
          "product": "cupoch",
          "programFiles": [
            "tjbench.c"
          ],
          "vendor": "neka-nat",
          "versions": [
            {
              "lessThan": "v0.2.11.0",
              "status": "affected",
              "version": "0",
              "versionType": "git"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "TITAN Team (titancaproject@gmail.com)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Out-of-bounds Write vulnerability in neka-nat cupoch (third_party/libjpeg-turbo/libjpeg-turbo modules).\u003cp\u003e This vulnerability is associated with program files \u003ctt\u003etjbench.C\u003c/tt\u003e.\u003c/p\u003e\u003cp\u003eThis issue affects cupoch.\u003c/p\u003e"
            }
          ],
          "value": "Out-of-bounds Write vulnerability in neka-nat cupoch (third_party/libjpeg-turbo/libjpeg-turbo modules). This vulnerability is associated with program files tjbench.C.\n\nThis issue affects cupoch."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "YES",
            "Recovery": "AUTOMATIC",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "AMBER",
            "subAvailabilityImpact": "LOW",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "LOW",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L/AU:Y/R:A/RE:M/U:Amber",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "MODERATE"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787 Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-27T08:25:17.496Z",
        "orgId": "1a37b84a-8e51-4525-b3d6-87e2fae01dbd",
        "shortName": "GovTech CSG"
      },
      "references": [
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/neka-nat/cupoch/pull/138"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "An out of bounds write due to a missing bounds check in neka-nat/cupoch",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1a37b84a-8e51-4525-b3d6-87e2fae01dbd",
    "assignerShortName": "GovTech CSG",
    "cveId": "CVE-2026-24797",
    "datePublished": "2026-01-27T08:25:17.496Z",
    "dateReserved": "2026-01-27T08:18:43.268Z",
    "dateUpdated": "2026-01-27T21:38:37.425Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-24797",
      "date": "2026-10-03",
      "epss": "0.00362",
      "percentile": "0.27741"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "collectionURL": "https://github.com/neka-nat/cupoch",
                "defaultStatus": "affected",
                "modules": [
                  "third_party/libjpeg-turbo/libjpeg-turbo"
                ],
                "product": "cupoch",
                "programFiles": [
                  "tjbench.c"
                ],
                "vendor": "neka-nat",
                "versions": [
                  {
                    "lessThan": "v0.2.11.0",
                    "status": "affected",
                    "version": "0",
                    "versionType": "git"
                  }
                ]
              }
            ],
            "source": "cve_disclosure@tech.gov.sg"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Out-of-bounds Write vulnerability in neka-nat cupoch (third_party/libjpeg-turbo/libjpeg-turbo modules). This vulnerability is associated with program files tjbench.C.\n\nThis issue affects cupoch."
          },
          {
            "lang": "es",
            "value": "Vulnerabilidad de escritura fuera de l\u00edmites en neka-nat cupoch (m\u00f3dulos de terceros/libjpeg-turbo/libjpeg-turbo). Esta vulnerabilidad est\u00e1 asociada con los archivos de programa tjbench.C.\n\nEste problema afecta a cupoch."
          }
        ],
        "id": "CVE-2026-24797",
        "lastModified": "2026-06-17T10:23:36.407",
        "metrics": {
          "cvssMetricV40": [
            {
              "cvssData": {
                "Automatable": "YES",
                "Recovery": "AUTOMATIC",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "NETWORK",
                "availabilityRequirement": "NOT_DEFINED",
                "baseScore": 6.9,
                "baseSeverity": "MEDIUM",
                "confidentialityRequirement": "NOT_DEFINED",
                "exploitMaturity": "NOT_DEFINED",
                "integrityRequirement": "NOT_DEFINED",
                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "NONE",
                "providerUrgency": "AMBER",
                "subAvailabilityImpact": "LOW",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "LOW",
                "userInteraction": "NONE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:A/V:X/RE:M/U:Amber",
                "version": "4.0",
                "vulnAvailabilityImpact": "LOW",
                "vulnConfidentialityImpact": "NONE",
                "vulnIntegrityImpact": "LOW",
                "vulnerabilityResponseEffort": "MODERATE"
              },
              "source": "cve_disclosure@tech.gov.sg",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-24797",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "yes"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-27T21:09:38.092555Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-01-27T09:15:49.510",
        "references": [
          {
            "source": "cve_disclosure@tech.gov.sg",
            "url": "https://github.com/neka-nat/cupoch/pull/138"
          }
        ],
        "sourceIdentifier": "cve_disclosure@tech.gov.sg",
        "vulnStatus": "Deferred",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-787"
              }
            ],
            "source": "cve_disclosure@tech.gov.sg",
            "type": "Secondary"
          }
        ]
      }
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-24797",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-01-27T21:09:38.092555Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-01-27T21:09:40.532Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "collectionURL": "https://github.com/neka-nat/cupoch",
              "defaultStatus": "affected",
              "modules": [
                "third_party/libjpeg-turbo/libjpeg-turbo"
              ],
              "product": "cupoch",
              "programFiles": [
                "tjbench.c"
              ],
              "vendor": "neka-nat",
              "versions": [
                {
                  "lessThan": "v0.2.11.0",
                  "status": "affected",
                  "version": "0",
                  "versionType": "git"
                }
              ]
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "reporter",
              "value": "TITAN Team (titancaproject@gmail.com)"
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "Out-of-bounds Write vulnerability in neka-nat cupoch (third_party/libjpeg-turbo/libjpeg-turbo modules).\u003cp\u003e This vulnerability is associated with program files \u003ctt\u003etjbench.C\u003c/tt\u003e.\u003c/p\u003e\u003cp\u003eThis issue affects cupoch.\u003c/p\u003e"
                }
              ],
              "value": "Out-of-bounds Write vulnerability in neka-nat cupoch (third_party/libjpeg-turbo/libjpeg-turbo modules). This vulnerability is associated with program files tjbench.C.\n\nThis issue affects cupoch."
            }
          ],
          "metrics": [
            {
              "cvssV4_0": {
                "Automatable": "YES",
                "Recovery": "AUTOMATIC",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "NETWORK",
                "baseScore": 6.9,
                "baseSeverity": "MEDIUM",
                "exploitMaturity": "NOT_DEFINED",
                "privilegesRequired": "NONE",
                "providerUrgency": "AMBER",
                "subAvailabilityImpact": "LOW",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "LOW",
                "userInteraction": "NONE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L/AU:Y/R:A/RE:M/U:Amber",
                "version": "4.0",
                "vulnAvailabilityImpact": "LOW",
                "vulnConfidentialityImpact": "NONE",
                "vulnIntegrityImpact": "LOW",
                "vulnerabilityResponseEffort": "MODERATE"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-787",
                  "description": "CWE-787 Out-of-bounds Write",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-01-27T08:25:17.496Z",
            "orgId": "1a37b84a-8e51-4525-b3d6-87e2fae01dbd",
            "shortName": "GovTech CSG"
          },
          "references": [
            {
              "tags": [
                "patch"
              ],
              "url": "https://github.com/neka-nat/cupoch/pull/138"
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "title": "An out of bounds write due to a missing bounds check in neka-nat/cupoch",
          "x_generator": {
            "engine": "Vulnogram 0.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "1a37b84a-8e51-4525-b3d6-87e2fae01dbd",
        "assignerShortName": "GovTech CSG",
        "cveId": "CVE-2026-24797",
        "datePublished": "2026-01-27T08:25:17.496Z",
        "dateReserved": "2026-01-27T08:18:43.268Z",
        "dateUpdated": "2026-01-27T21:38:37.425Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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.