p PatchFirst

CVE-2026-20345

CVE-2026-20345 · ClamAV GPT File Format Processing Memory Corruption Vulnerability

This page contains facts from public vulnerability sources. Check the original advisory before updating.

A vulnerability in the GPT file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition or possibly other expanded impacts as a result of memory corruption on an affected device. This vulnerability is due to improper handling of an endian conversion operation, which may result in an out-of-bounds buffer write. An attacker could exploit this vulnerability by submitting a crafted GPT file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to terminate, resulting in a DoS condition on the affected software.

CVSS 7.5 · High · EPSS 0.5% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • cisco secure endpoint

    Versions
    • 1.12.3: Affected
    • 1.8.0: Affected
    • 1.11.1: Affected
    • 1.12.4: Affected
    • 1.10.0: Affected
    • 1.12.0: Affected
    • 1.8.1: Affected
    • 1.10.1: Affected
    • 1.10.2: Affected
    • 1.12.2: Affected
    • 1.6.0: Affected
    • 1.9.0: Affected
    • 1.7.0: Affected
    • 1.12.1: Affected
    • 1.12.6: Affected
    • 1.8.4: Affected
    • 1.11.0: Affected
    • 1.9.1: Affected
    • 1.12.5: Affected
    • 2.0.2: Affected
    • 1.1.0: Affected
    • 1.14.0: Affected
    • 2.4.0: Affected
    • 1.15.2: Affected
    • 1.16.0: Affected
    • 1.21.0: Affected
    • 1.22.2: Affected
    • 1.24.5: Affected
    • 1.19.0: Affected

    No fix published

  • clamav Debian:12

    Versions
    • 1.0.1+dfsg-2
    • 1.0.2+dfsg-1
    • 1.0.2+dfsg-1~deb12u1
    • 1.0.3+dfsg-1
    • 1.0.3+dfsg-1~deb12u1
    • 1.0.3+dfsg-2
    • 1.0.4+dfsg-1
    • 1.0.5+dfsg-1
    • 1.0.5+dfsg-1.1
    • 1.0.5+dfsg-1~deb12u1
    • 1.0.6+dfsg-1
    • 1.0.7+dfsg-1~deb11u1
    • 1.0.7+dfsg-1~deb11u2
    • 1.0.7+dfsg-1~deb12u1
    • 1.0.9+dfsg-1~deb11u1
    • 1.0.9+dfsg-1~deb12u1
    • 1.2.1+dfsg-1
    • 1.2.1+dfsg-2
    • 1.2.1+dfsg-3
    • 1.3.1+dfsg-1
    • 1.3.1+dfsg-2
    • 1.3.1+dfsg-3
    • 1.3.1+dfsg-4
    • 1.3.1+dfsg-5
    • 1.4.1+dfsg-1
    • 1.4.2+dfsg-1
    • 1.4.3+dfsg-1
    • 1.4.3+dfsg-1~deb11u1
    • 1.4.3+dfsg-1~deb12u1
    • 1.4.3+dfsg-1~deb12u2
    • 1.4.3+dfsg-2
    • 1.4.4+dfsg-1
    • 1.4.4+dfsg-2
    • 1.4.5+dfsg-1
    • 1.4.5+dfsg-2
    • 1.4.5+dfsg-3
    Affected ranges
    • ECOSYSTEM: < 1.4.6+dfsg-0+deb12u1

    Update to 1.4.6+dfsg-0+deb12u1

  • clamav Debian:13

    Versions
    • 1.4.3+dfsg-1
    • 1.4.3+dfsg-2
    • 1.4.4+dfsg-1
    • 1.4.4+dfsg-2
    • 1.4.5+dfsg-1
    • 1.4.5+dfsg-2
    • 1.4.5+dfsg-3
    • 1.4.6+dfsg-1
    • 1.4.6+dfsg-1~deb13u1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • clamav Debian:14

    Versions
    • 1.4.3+dfsg-1
    • 1.4.3+dfsg-2
    • 1.4.4+dfsg-1
    • 1.4.4+dfsg-2
    • 1.4.5+dfsg-1
    • 1.4.5+dfsg-2
    • 1.4.5+dfsg-3
    • 1.4.6+dfsg-1~deb13u1
    Affected ranges
    • ECOSYSTEM: < 1.4.6+dfsg-1

    Update to 1.4.6+dfsg-1

  • clamav Ubuntu:Pro:14.04:LTS

    Versions
    • 0.97.8+dfsg-1ubuntu4
    • 0.97.8+dfsg-1ubuntu5
    • 0.98.1+dfsg-1ubuntu4
    • 0.98.1+dfsg-1ubuntu5
    • 0.98.1+dfsg-2ubuntu2
    • 0.98.1+dfsg-4ubuntu1
    • 0.98.1+dfsg-4ubuntu1.1
    • 0.98.5+addedllvm-0ubuntu0.14.04.1
    • 0.98.6+dfsg-0ubuntu0.14.04.1
    • 0.98.7+dfsg-0ubuntu0.14.04.1
    • 0.99.2+addedllvm-0ubuntu0.14.04.1
    • 0.99.2+addedllvm-0ubuntu0.14.04.2
    • 0.99.3+addedllvm-0ubuntu0.14.04.1
    • 0.99.4+addedllvm-0ubuntu0.14.04.1
    • 0.100.1+dfsg-1ubuntu0.14.04.1
    • 0.100.1+dfsg-1ubuntu0.14.04.2
    • 0.100.1+dfsg-1ubuntu0.14.04.3
    • 0.100.1+dfsg-1ubuntu0.14.04.4
    • 0.100.2+dfsg-1ubuntu0.14.04.1
    • 0.100.2+dfsg-1ubuntu0.14.04.2
    • 0.100.3+dfsg-0ubuntu0.14.04.1
    • 0.100.3+dfsg-0ubuntu0.14.04.1+esm1
    • 0.101.4+dfsg-0ubuntu0.14.04.1+esm1
    • 0.102.1+dfsg-0ubuntu0.14.04.1+esm1
    • 0.102.2+dfsg-0ubuntu0.14.04.1+esm1
    • 0.102.3+dfsg-0ubuntu0.14.04.1+esm1
    • 0.102.4+dfsg-0ubuntu0.14.04.1+esm1
    • 0.103.2+dfsg-0ubuntu0.14.04.1+esm1
    • 0.103.2+dfsg-0ubuntu0.14.04.1+esm2
    • 0.103.5+dfsg-0ubuntu0.14.04.1+esm1
    • 0.103.6+dfsg-0ubuntu0.14.04.1+esm1
    • 0.103.8+dfsg-0ubuntu0.14.04.1+esm1
    • 0.103.9+dfsg-0ubuntu0.14.04.1+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • clamav Ubuntu:Pro:16.04:LTS

    Versions
    • 0.98.7+dfsg-0ubuntu4
    • 0.98.7+dfsg-0ubuntu5
    • 0.99+dfsg-1ubuntu1
    • 0.99+dfsg-1ubuntu1.1
    • 0.99+dfsg-1ubuntu1.2
    • 0.99.2+dfsg-0ubuntu0.16.04.1
    • 0.99.2+dfsg-0ubuntu0.16.04.2
    • 0.99.2+dfsg-0ubuntu0.16.04.3
    • 0.99.3+addedllvm-0ubuntu0.16.04.1
    • 0.99.4+addedllvm-0ubuntu0.16.04.1
    • 0.100.1+dfsg-1ubuntu0.16.04.1
    • 0.100.1+dfsg-1ubuntu0.16.04.2
    • 0.100.1+dfsg-1ubuntu0.16.04.3
    • 0.100.2+dfsg-1ubuntu0.16.04.1
    • 0.100.3+dfsg-0ubuntu0.16.04.1
    • 0.101.4+dfsg-0ubuntu0.16.04.1
    • 0.102.1+dfsg-0ubuntu0.16.04.2
    • 0.102.2+dfsg-0ubuntu0.16.04.1
    • 0.102.3+dfsg-0ubuntu0.16.04.1
    • 0.102.4+dfsg-0ubuntu0.16.04.1
    • 0.103.2+dfsg-0ubuntu0.16.04.1
    • 0.103.2+dfsg-0ubuntu0.16.04.1+esm1
    • 0.103.5+dfsg-0ubuntu0.16.04.1+esm1
    • 0.103.6+dfsg-0ubuntu0.16.04.1+esm1
    • 0.103.8+dfsg-0ubuntu0.16.04.1+esm1
    • 0.103.9+dfsg-0ubuntu0.16.04.1+esm1
    • 0.103.12+dfsg-0ubuntu0.16.04.1+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • clamav Ubuntu:Pro:18.04:LTS

    Versions
    • 0.99.2+dfsg-6ubuntu2
    • 0.99.3~beta1+dfsg-2ubuntu1
    • 0.99.3~beta1+dfsg-2ubuntu2
    • 0.99.3+addedllvm-0ubuntu1
    • 0.99.3+addedllvm-0ubuntu2
    • 0.99.4+addedllvm-0ubuntu1
    • 0.100.1+dfsg-1ubuntu0.18.04.1
    • 0.100.1+dfsg-1ubuntu0.18.04.2
    • 0.100.1+dfsg-1ubuntu0.18.04.3
    • 0.100.2+dfsg-1ubuntu0.18.04.1
    • 0.100.3+dfsg-0ubuntu0.18.04.1
    • 0.101.4+dfsg-0ubuntu0.18.04.1
    • 0.102.1+dfsg-0ubuntu0.18.04.2
    • 0.102.2+dfsg-0ubuntu0.18.04.1
    • 0.102.3+dfsg-0ubuntu0.18.04.1
    • 0.102.4+dfsg-0ubuntu0.18.04.1
    • 0.103.2+dfsg-0ubuntu0.18.04.1
    • 0.103.2+dfsg-0ubuntu0.18.04.2
    • 0.103.2+dfsg-0ubuntu0.18.04.3
    • 0.103.5+dfsg-0ubuntu0.18.04.1
    • 0.103.6+dfsg-0ubuntu0.18.04.1
    • 0.103.8+dfsg-0ubuntu0.18.04.1
    • 0.103.9+dfsg-0ubuntu0.18.04.1+esm1
    • 0.103.12+dfsg-0ubuntu0.18.04.1+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • clamav Ubuntu:Pro:20.04:LTS

    Versions
    • 0.101.4+dfsg-1ubuntu1
    • 0.102.1+dfsg-1ubuntu1
    • 0.102.1+dfsg-2ubuntu1
    • 0.102.1+dfsg-2ubuntu2
    • 0.102.2+dfsg-1ubuntu1
    • 0.102.2+dfsg-2ubuntu1
    • 0.102.3+dfsg-0ubuntu0.20.04.1
    • 0.102.4+dfsg-0ubuntu0.20.04.1
    • 0.103.2+dfsg-0ubuntu0.20.04.1
    • 0.103.2+dfsg-0ubuntu0.20.04.2
    • 0.103.5+dfsg-1~20.04.1
    • 0.103.6+dfsg-0ubuntu0.20.04.1
    • 0.103.8+dfsg-0ubuntu0.20.04.1
    • 0.103.9+dfsg-0ubuntu0.20.04.1
    • 0.103.11+dfsg-0ubuntu0.20.04.1
    • 0.103.12+dfsg-0ubuntu0.20.04.1
    • 1.4.3+dfsg-0ubuntu0.20.04.1+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • clamav Ubuntu:22.04:LTS

    Versions
    • 0.103.3+dfsg-1
    • 0.103.4+dfsg-1
    • 0.103.4+dfsg-1build1
    • 0.103.5+dfsg-1
    • 0.103.6+dfsg-0ubuntu0.22.04.1
    • 0.103.8+dfsg-0ubuntu0.22.04.1
    • 0.103.9+dfsg-0ubuntu0.22.04.1
    • 0.103.11+dfsg-0ubuntu0.22.04.1
    • 0.103.12+dfsg-0ubuntu0.22.04.1
    • 1.4.3+dfsg-0ubuntu0.22.04.1
    • 1.4.4+dfsg-0ubuntu0.22.04.1
    • 1.5.3+dfsg-0ubuntu0.22.04.2
    Affected ranges
    • ECOSYSTEM: < 1.5.4+dfsg-0ubuntu0.22.04.1

    Update to 1.5.4+dfsg-0ubuntu0.22.04.1

  • clamav Ubuntu:24.04:LTS

    Versions
    • 1.0.2+dfsg-1ubuntu1
    • 1.0.3+dfsg-2ubuntu1
    • 1.0.4+dfsg-0ubuntu1
    • 1.0.5+dfsg-1ubuntu1
    • 1.0.5+dfsg-1.1ubuntu2
    • 1.0.5+dfsg-1.1ubuntu3
    • 1.0.7+dfsg-0ubuntu0.24.04.1
    • 1.0.8+dfsg-0ubuntu0.24.04.1
    • 1.4.3+dfsg-0ubuntu0.24.04.1
    • 1.4.4+dfsg-0ubuntu0.24.04.1
    • 1.5.3+dfsg-0ubuntu0.24.04.1
    Affected ranges
    • ECOSYSTEM: < 1.5.4+dfsg-0ubuntu0.24.04.1

    Update to 1.5.4+dfsg-0ubuntu0.24.04.1

  • clamav Ubuntu:26.04:LTS

    Versions
    • 1.4.3+dfsg-0ubuntu2
    • 1.4.3+dfsg-0ubuntu3
    • 1.4.3+dfsg-2ubuntu1
    • 1.4.3+dfsg-2ubuntu2
    • 1.4.3+dfsg-2ubuntu3
    • 1.4.4+dfsg-0ubuntu0.26.04.1
    • 1.5.3+dfsg-0ubuntu0.26.04.1
    • 1.5.3+dfsg-0ubuntu0.26.04.2
    Affected ranges
    • ECOSYSTEM: < 1.5.4+dfsg-0ubuntu0.26.04.1

    Update to 1.5.4+dfsg-0ubuntu0.26.04.1

Original sources

Check your server →