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CVE-2026-20348

CVE-2026-20348 · ClamAV XAR File Format Processing Memory Corruption Vulnerability

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

This page shows selected source facts. See the linked advisories for the complete description and affected versions.

A vulnerability in the XAR 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 boundary checks for content in XAR files during scanning. An attacker could exploit this vulnerability by submitting a crafted file that contains XAR content 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 0.6% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • cisco secure endpoint

    Versions
    • 7.0.5: Affected
    • 6.2.19: Affected
    • 7.3.3: Affected
    • 7.2.13: Affected
    • 6.1.5: Affected
    • 6.3.1: Affected
    • 6.2.5: Affected
    • 7.3.5: Affected
    • 6.2.1: Affected
    • 7.2.7: Affected
    • 7.1.1: Affected
    • 6.3.5: Affected
    • 6.2.9: Affected
    • 7.3.1: Affected
    • 6.1.7: Affected
    • 7.2.11: Affected
    • 7.2.3: Affected
    • 7.1.5: Affected
    • 6.3.3: Affected
    • 7.3.9: Affected
    • 6.2.3: Affected
    • 6.1.9: Affected
    • 6.0.9: Affected
    • 7.2.5: Affected
    • 6.0.7: Affected
    • 6.3.7: Affected
    • 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
    • 1.12.1: Affected
    • 1.12.6: Affected
    • 1.14.0: Affected
    • 1.10.2: Affected
    • 1.12.7: Affected
    • 1.12.2: Affected
    • 1.6.0: Affected
    • 1.9.0: Affected
    • 1.11.0: Affected
    • 1.7.0: Affected
    • 1.13.0: Affected
    • 1.8.4: Affected
    • 1.13.1: Affected
    • 1.9.1: Affected
    • 1.12.5: Affected
    • 1.13.2: Affected
    • 8.1.7.21512: Affected
    • 8.1.7: Affected
    • 8.1.5: Affected
    • 8.1.3.21242: Affected
    • 8.1.3: Affected
    • 8.1.5.21322: Affected
    • 8.1.7.21417: Affected
    • 1.14.1: Affected
    • 1.15.1: Affected
    • 1.15.2: Affected
    • 1.15.3: Affected
    • 1.15.4: Affected
    • 1.15.5: Affected
    • 1.15.6: Affected
    • 1.16.0: Affected
    • 1.16.1: Affected
    • 1.16.2: Affected
    • 1.16.3: Affected
    • 1.18.0: Affected
    • 1.18.1: Affected
    • 1.20.0: Affected
    • 1.21.0: Affected
    • 1.21.1: Affected
    • 1.21.2: Affected
    • 1.21.3: Affected
    • 1.22.0: Affected
    • 1.22.1: Affected
    • 1.22.2: Affected
    • 1.22.3: Affected
    • 1.22.4: Affected
    • 1.24.0: Affected
    • 1.24.1: Affected
    • 1.24.2: Affected
    • 1.24.3: Affected
    • 1.24.4: Affected
    • 1.26.0: Affected
    • 1.24.5: Affected
    • 1.26.1: Affected
    • 1.27.0: Affected
    • 1.15.0: Affected
    • 1.17.0: Affected
    • 1.17.1: Affected
    • 1.17.2: Affected
    • 1.19.0: Affected
    • 1.20.1: Affected
    • 1.20.2: Affected
    • 1.20.3: Affected
    • 1.20.4: Affected
    • 1.20.5: Affected
    • 1.20.6: Affected
    • 1.23.0: Affected
    • 1.23.1: 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

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