WID-SEC-W-2026-2708

Vulnerability from csaf_certbund - Published: 2026-08-09 22:00 - Updated: 2026-09-21 22:00
Summary
ClamAV: Mehrere Schwachstellen ermöglichen Denial of Service und Offenlegung von Informationen
Severity
Hoch
Notes
Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.
Produktbeschreibung: ClamAV ist ein Open Source Virenscanner.
Angriff: Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in ClamAV ausnutzen, um einen Denial of Service Angriff durchzuführen und Informationen offenzulegen.
Betroffene Betriebssysteme: - Linux - Sonstiges - UNIX - Windows
CVE-2026-20337
Affected products
Product Identifier Version Remediation
Cisco Secure Endpoint Connector
Cisco / Secure Endpoint
 cpe:/a:cisco:secure_endpoint:connector Connector
Open Source ClamAV <1.5.4
Open Source / ClamAV
 <1.5.4
Open Source ClamAV <1.4.6
Open Source / ClamAV
 <1.4.6
cPanel cPanel/WHM <136.0.35
cPanel / cPanel/WHM
 <136.0.35
Ubuntu Linux
Ubuntu
 cpe:/o:canonical:ubuntu_linux:- —
cPanel cPanel/WHM <137.9999.118
cPanel / cPanel/WHM
 <137.9999.118
cPanel cPanel/WHM <134.0.51
cPanel / cPanel/WHM
 <134.0.51
Amazon Linux 2
Amazon
 cpe:/o:amazon:linux_2:- —
SUSE Linux
SUSE
 cpe:/o:suse:suse_linux:- —
CVE-2026-20338
Affected products
Known affected 9 products, the same list as for CVE-2026-20337
CVE-2026-20339
Affected products
Known affected 9 products, the same list as for CVE-2026-20337
CVE-2026-20345
Affected products
Known affected 9 products, the same list as for CVE-2026-20337
CVE-2026-20346
Affected products
Known affected 9 products, the same list as for CVE-2026-20337
CVE-2026-20347
Affected products
Known affected 9 products, the same list as for CVE-2026-20337
CVE-2026-20348
Affected products
Known affected 9 products, the same list as for CVE-2026-20337
References
To clipboard 

{
  "document": {
    "aggregate_severity": {
      "text": "hoch"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "ClamAV ist ein Open Source Virenscanner.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in ClamAV ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren und Informationen offenzulegen.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux\n- Sonstiges\n- UNIX\n- Windows",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2026-2708 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2708.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-2708 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2708"
      },
      {
        "category": "external",
        "summary": "ClamAV Release Notes vom 2026-08-09",
        "url": "https://blog.clamav.net/2026/08/clamav-154-and-146-security-patch.html"
      },
      {
        "category": "external",
        "summary": "Cisco Security Advisory cisco-sa-clamav-WuuvVd26 vom 2026-08-09",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-WuuvVd26"
      },
      {
        "category": "external",
        "summary": "cPanel 138 Change Log vom 2026-08-18",
        "url": "https://docs.cpanel.net/changelogs/138-change-log/"
      },
      {
        "category": "external",
        "summary": "cPanel 136 Change Log vom 2026-08-18",
        "url": "https://docs.cpanel.net/changelogs/136-change-log/"
      },
      {
        "category": "external",
        "summary": "cPanel 134 Change Log vom 2026-08-18",
        "url": "https://docs.cpanel.net/changelogs/134-change-log/"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALAS2-2026-3894 vom 2026-09-01",
        "url": "https://alas.aws.amazon.com/AL2/ALAS2-2026-3894.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:4208-1 vom 2026-09-16",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-September/029196.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:23727-1 vom 2026-09-16",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-September/029166.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:4179-1 vom 2026-09-16",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-September/029148.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:23706-1 vom 2026-09-16",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-September/029179.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:4180-1 vom 2026-09-16",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-September/029147.html"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-8788-1 vom 2026-09-21",
        "url": "https://ubuntu.com/security/notices/USN-8788-1"
      }
    ],
    "source_lang": "en-US",
    "title": "ClamAV: Mehrere Schwachstellen erm\u00f6glichen Denial of Service und Offenlegung von Informationen",
    "tracking": {
      "current_release_date": "2026-09-21T22:00:00.000+00:00",
      "generator": {
        "date": "2026-09-22T10:49:12.685+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-2708",
      "initial_release_date": "2026-08-09T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-08-09T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2026-08-10T22:00:00.000+00:00",
          "number": "2",
          "summary": "PoC aufgenommen"
        },
        {
          "date": "2026-08-17T22:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates aufgenommen"
        },
        {
          "date": "2026-08-31T22:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von Amazon aufgenommen"
        },
        {
          "date": "2026-09-16T22:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2026-09-21T22:00:00.000+00:00",
          "number": "6",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        }
      ],
      "status": "final",
      "version": "6"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Amazon Linux 2",
            "product": {
              "name": "Amazon Linux 2",
              "product_id": "398363",
              "product_identification_helper": {
                "cpe": "cpe:/o:amazon:linux_2:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Amazon"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "Connector",
                "product": {
                  "name": "Cisco Secure Endpoint Connector",
                  "product_id": "T057765",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:cisco:secure_endpoint:connector"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Secure Endpoint"
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c1.5.4",
                "product": {
                  "name": "Open Source ClamAV \u003c1.5.4",
                  "product_id": "T057758"
                }
              },
              {
                "category": "product_version",
                "name": "1.5.4",
                "product": {
                  "name": "Open Source ClamAV 1.5.4",
                  "product_id": "T057758-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:clamav:clamav:1.5.4"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c1.4.6",
                "product": {
                  "name": "Open Source ClamAV \u003c1.4.6",
                  "product_id": "T057759"
                }
              },
              {
                "category": "product_version",
                "name": "1.4.6",
                "product": {
                  "name": "Open Source ClamAV 1.4.6",
                  "product_id": "T057759-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:clamav:clamav:1.4.6"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "ClamAV"
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "SUSE Linux",
            "product": {
              "name": "SUSE Linux",
              "product_id": "T054646",
              "product_identification_helper": {
                "cpe": "cpe:/o:suse:suse_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "SUSE"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Ubuntu Linux",
            "product": {
              "name": "Ubuntu Linux",
              "product_id": "T055947",
              "product_identification_helper": {
                "cpe": "cpe:/o:canonical:ubuntu_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Ubuntu"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c136.0.35",
                "product": {
                  "name": "cPanel cPanel/WHM \u003c136.0.35",
                  "product_id": "T058185"
                }
              },
              {
                "category": "product_version",
                "name": "136.0.35",
                "product": {
                  "name": "cPanel cPanel/WHM 136.0.35",
                  "product_id": "T058185-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:cpanel:cpanel_whm:136.0.35"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c134.0.51",
                "product": {
                  "name": "cPanel cPanel/WHM \u003c134.0.51",
                  "product_id": "T058186"
                }
              },
              {
                "category": "product_version",
                "name": "134.0.51",
                "product": {
                  "name": "cPanel cPanel/WHM 134.0.51",
                  "product_id": "T058186-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:cpanel:cpanel_whm:134.0.51"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c137.9999.118",
                "product": {
                  "name": "cPanel cPanel/WHM \u003c137.9999.118",
                  "product_id": "T058187"
                }
              },
              {
                "category": "product_version",
                "name": "137.9999.118",
                "product": {
                  "name": "cPanel cPanel/WHM 137.9999.118",
                  "product_id": "T058187-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:cpanel:cpanel_whm:137.9999.118"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "cPanel/WHM"
          }
        ],
        "category": "vendor",
        "name": "cPanel"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-20337",
      "product_status": {
        "known_affected": [
          "T057765",
          "T057758",
          "T057759",
          "T058185",
          "T055947",
          "T058187",
          "T058186",
          "398363",
          "T054646"
        ]
      },
      "release_date": "2026-08-09T22:00:00.000+00:00",
      "title": "CVE-2026-20337"
    },
    {
      "cve": "CVE-2026-20338",
      "product_status": {
        "known_affected": [
          "T057765",
          "T057758",
          "T057759",
          "T058185",
          "T055947",
          "T058187",
          "T058186",
          "398363",
          "T054646"
        ]
      },
      "release_date": "2026-08-09T22:00:00.000+00:00",
      "title": "CVE-2026-20338"
    },
    {
      "cve": "CVE-2026-20339",
      "product_status": {
        "known_affected": [
          "T057765",
          "T057758",
          "T057759",
          "T058185",
          "T055947",
          "T058187",
          "T058186",
          "398363",
          "T054646"
        ]
      },
      "release_date": "2026-08-09T22:00:00.000+00:00",
      "title": "CVE-2026-20339"
    },
    {
      "cve": "CVE-2026-20345",
      "product_status": {
        "known_affected": [
          "T057765",
          "T057758",
          "T057759",
          "T058185",
          "T055947",
          "T058187",
          "T058186",
          "398363",
          "T054646"
        ]
      },
      "release_date": "2026-08-09T22:00:00.000+00:00",
      "title": "CVE-2026-20345"
    },
    {
      "cve": "CVE-2026-20346",
      "product_status": {
        "known_affected": [
          "T057765",
          "T057758",
          "T057759",
          "T058185",
          "T055947",
          "T058187",
          "T058186",
          "398363",
          "T054646"
        ]
      },
      "release_date": "2026-08-09T22:00:00.000+00:00",
      "title": "CVE-2026-20346"
    },
    {
      "cve": "CVE-2026-20347",
      "product_status": {
        "known_affected": [
          "T057765",
          "T057758",
          "T057759",
          "T058185",
          "T055947",
          "T058187",
          "T058186",
          "398363",
          "T054646"
        ]
      },
      "release_date": "2026-08-09T22:00:00.000+00:00",
      "title": "CVE-2026-20347"
    },
    {
      "cve": "CVE-2026-20348",
      "product_status": {
        "known_affected": [
          "T057765",
          "T057758",
          "T057759",
          "T058185",
          "T055947",
          "T058187",
          "T058186",
          "398363",
          "T054646"
        ]
      },
      "release_date": "2026-08-09T22:00:00.000+00:00",
      "title": "CVE-2026-20348"
    }
  ]
}



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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.