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CVE-2025-20260

CVE-2025-20260 · ClamAV PDF Scanning Buffer Overflow Vulnerability

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

A vulnerability in the PDF scanning processes of ClamAV could allow an unauthenticated, remote attacker to cause a buffer overflow condition, cause a denial of service (DoS) condition, or execute arbitrary code on an affected device. This vulnerability exists because memory buffers are allocated incorrectly when PDF files are processed. An attacker could exploit this vulnerability by submitting a crafted PDF file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to trigger a buffer overflow, likely resulting in the termination of the ClamAV scanning process and a DoS condition on the affected software. Although unproven, there is also a possibility that an attacker could leverage the buffer overflow to execute arbitrary code with the privileges of the ClamAV process.

CVSS 9.8 · Critical · EPSS 1.6% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • clamav

    Versions
    • 1.4.2: Affected
    • 1.4.1: Affected
    • 1.4.0: Affected
    • 1.3.2: Affected
    • 1.3.1: Affected
    • 1.3.0: Affected
    • 1.2.3: Affected
    • 1.2.2: Affected
    • 1.2.1: Affected
    • 1.2.0: 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
    Affected ranges
    • ECOSYSTEM: < 1.0.9+dfsg-1~deb12u1

    Update to 1.0.9+dfsg-1~deb12u1

  • clamav Debian:13

    Affected ranges
    • ECOSYSTEM: < 1.4.3+dfsg-1

    Update to 1.4.3+dfsg-1

  • clamav Debian:14

    Affected ranges
    • ECOSYSTEM: < 1.4.3+dfsg-1

    Update to 1.4.3+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
    Affected ranges
    • ECOSYSTEM: < 1.4.3+dfsg-0ubuntu0.20.04.1+esm1

    Update to 1.4.3+dfsg-0ubuntu0.20.04.1+esm1

  • 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
    Affected ranges
    • ECOSYSTEM: < 1.4.3+dfsg-0ubuntu0.22.04.1

    Update to 1.4.3+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
    Affected ranges
    • ECOSYSTEM: < 1.4.3+dfsg-0ubuntu0.24.04.1

    Update to 1.4.3+dfsg-0ubuntu0.24.04.1

  • clamav Ubuntu:25.10

    Versions
    • 1.4.2+dfsg-0ubuntu1
    • 1.4.2+dfsg-0ubuntu2
    • 1.4.2+dfsg-1ubuntu1
    Affected ranges
    • ECOSYSTEM: < 1.4.3+dfsg-0ubuntu1

    Update to 1.4.3+dfsg-0ubuntu1

Original sources

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