# CVE-2025-20128: clamav: A vulnerability in the Object Linking and Embedding 2 (OLE2) decryptionroutine of ClamAV could allow an unauthenticat... CVE-2025-20128 is fixed in 25 products on 1 platform, first by clamav 1.0.8+dfsg-0ubuntu0.24.04.1, released January 22, 2025. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2025-20128 - Priority: High - CVSS: 7.5 (Medium) - EPSS: 0.0182 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Jan 22, 2025 ## Description A vulnerability in the Object Linking and Embedding 2 (OLE2) decryptionroutine of ClamAV could allow an unauthenticated, remote attacker to causea denial of service (DoS) condition on an affected device.This vulnerability is due to an integer underflow in a bounds check thatallows for a heap buffer overflow read. An attacker could exploit thisvulnerability by submitting a crafted file containing OLE2 content to bescanned by ClamAV on an affected device. A successful exploit could allowthe attacker to terminate the ClamAV scanning process, resulting in a DoScondition on the affected software.For a description of this vulnerability, see the .Cisco has released software updates that address this vulnerability. Thereare no workarounds that address this vulnerability. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | clamav Debian 11.6 (bullseye) | 1.0.9+dfsg-1~deb11u1 | [DLA-4292-1](https://patchblox.com/security/data/fix/linux/dla-4292-1.md) | Sep 4, 2025 | | Linux | clamav Debian 12.15 (bookworm) | 1.0.9+dfsg-1~deb12u1 | [DEBIAN-CVE-2025-20128](https://patchblox.com/security/data/fix/linux/debian-cve-2025-20128.md) | Jan 22, 2025 | | Linux | clamav Debian 13.5 (trixie) | 1.4.2+dfsg-1 | [DEBIAN-CVE-2025-20128](https://patchblox.com/security/data/fix/linux/debian-cve-2025-20128.md) | Jan 22, 2025 | | Linux | clamav Debian 14 | 1.4.2+dfsg-1 | [DEBIAN-CVE-2025-20128](https://patchblox.com/security/data/fix/linux/debian-cve-2025-20128.md) | Jan 22, 2025 | | Linux | clamav Ubuntu 24.04.5 LTS (noble) | 1.0.8+dfsg-0ubuntu0.24.04.1 | [clamav 1.0.8+dfsg-0ubuntu0.24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-clamav-1.0.8-dfsg-0ubuntu0.24.04.1.md) | Jan 22, 2025 | | Linux | clamav Ubuntu 24.10 (oracular) | 1.4.2+dfsg-0ubuntu0.24.10.1 | [clamav 1.4.2+dfsg-0ubuntu0.24.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-clamav-1.4.2-dfsg-0ubuntu0.24.10.1.md) | Jan 23, 2025 | | Linux | clamav opensuse-leap 15.6 | 1.4.2-150600.18.6.1 | [SUSE-SU-2025:0327-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-0327-1.md) | Feb 3, 2025 | | Linux | clamav sles 15.6 | 1.4.2-150600.18.6.1 | [SUSE-SU-2025:0327-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-0327-1.md) | Feb 3, 2025 | | Linux | clamav-base Ubuntu 24.04.5 LTS (noble) | 1.0.8+dfsg-0ubuntu0.24.04.1 | [clamav-base 1.0.8+dfsg-0ubuntu0.24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-clamav-base-1.0.8-dfsg-0ubuntu0.24.04.1.md) | Jan 22, 2025 | | Linux | clamav-base Ubuntu 24.10 (oracular) | 1.4.2+dfsg-0ubuntu0.24.10.1 | [clamav-base 1.4.2+dfsg-0ubuntu0.24.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-clamav-base-1.4.2-dfsg-0ubuntu0.24.10.1.md) | Jan 23, 2025 | | Linux | clamav-daemon Ubuntu 24.04.5 LTS (noble) | 1.0.8+dfsg-0ubuntu0.24.04.1 | [clamav-daemon 1.0.8+dfsg-0ubuntu0.24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-clamav-daemon-1.0.8-dfsg-0ubuntu0.24.04.1.md) | Jan 22, 2025 | | Linux | clamav-daemon Ubuntu 24.10 (oracular) | 1.4.2+dfsg-0ubuntu0.24.10.1 | [clamav-daemon 1.4.2+dfsg-0ubuntu0.24.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-clamav-daemon-1.4.2-dfsg-0ubuntu0.24.10.1.md) | Jan 23, 2025 | | Linux | clamav-docs Ubuntu 24.04.5 LTS (noble) | 1.0.8+dfsg-0ubuntu0.24.04.1 | [clamav-docs 1.0.8+dfsg-0ubuntu0.24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-clamav-docs-1.0.8-dfsg-0ubuntu0.24.04.1.md) | Jan 22, 2025 | | Linux | clamav-freshclam Ubuntu 24.04.5 LTS (noble) | 1.0.8+dfsg-0ubuntu0.24.04.1 | [clamav-freshclam 1.0.8+dfsg-0ubuntu0.24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-clamav-freshclam-1.0.8-dfsg-0ubuntu0.24.04.1.md) | Jan 22, 2025 | | Linux | clamav-freshclam Ubuntu 24.10 (oracular) | 1.4.2+dfsg-0ubuntu0.24.10.1 | [clamav-freshclam 1.4.2+dfsg-0ubuntu0.24.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-clamav-freshclam-1.4.2-dfsg-0ubuntu0.24.10.1.md) | Jan 23, 2025 | | Linux | clamav-milter Ubuntu 24.04.5 LTS (noble) | 1.0.8+dfsg-0ubuntu0.24.04.1 | [clamav-milter 1.0.8+dfsg-0ubuntu0.24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-clamav-milter-1.0.8-dfsg-0ubuntu0.24.04.1.md) | Jan 22, 2025 | | Linux | clamav-milter Ubuntu 24.10 (oracular) | 1.4.2+dfsg-0ubuntu0.24.10.1 | [clamav-milter 1.4.2+dfsg-0ubuntu0.24.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-clamav-milter-1.4.2-dfsg-0ubuntu0.24.10.1.md) | Jan 23, 2025 | | Linux | clamav-testfiles Ubuntu 24.04.5 LTS (noble) | 1.0.8+dfsg-0ubuntu0.24.04.1 | [clamav-testfiles 1.0.8+dfsg-0ubuntu0.24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-clamav-testfiles-1.0.8-dfsg-0ubuntu0.24.04.1.md) | Jan 22, 2025 | | Linux | clamav-testfiles Ubuntu 24.10 (oracular) | 1.4.2+dfsg-0ubuntu0.24.10.1 | [clamav-testfiles 1.4.2+dfsg-0ubuntu0.24.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-clamav-testfiles-1.4.2-dfsg-0ubuntu0.24.10.1.md) | Jan 23, 2025 | | Linux | clamav1.4 amzn 2023 | 1.4.2-1.amzn2023.0.1 | [ALAS2023-2025-866](https://patchblox.com/security/data/fix/linux/alas2023-2025-866.md) | Feb 26, 2025 | | Linux | clamav1.4-data amzn 2023 | 1.4.2-1.amzn2023.0.1 | [ALAS2023-2025-866](https://patchblox.com/security/data/fix/linux/alas2023-2025-866.md) | Feb 26, 2025 | | Linux | clamav1.4-debuginfo amzn 2023 | 1.4.2-1.amzn2023.0.1 | [ALAS2023-2025-866](https://patchblox.com/security/data/fix/linux/alas2023-2025-866.md) | Feb 26, 2025 | | Linux | clamav1.4-debugsource amzn 2023 | 1.4.2-1.amzn2023.0.1 | [ALAS2023-2025-866](https://patchblox.com/security/data/fix/linux/alas2023-2025-866.md) | Feb 26, 2025 | | Linux | clamav1.4-devel amzn 2023 | 1.4.2-1.amzn2023.0.1 | [ALAS2023-2025-866](https://patchblox.com/security/data/fix/linux/alas2023-2025-866.md) | Feb 26, 2025 | | Linux | clamav1.4-doc amzn 2023 | 1.4.2-1.amzn2023.0.1 | [ALAS2023-2025-866](https://patchblox.com/security/data/fix/linux/alas2023-2025-866.md) | Feb 26, 2025 | | Linux | clamav1.4-filesystem amzn 2023 | 1.4.2-1.amzn2023.0.1 | [ALAS2023-2025-866](https://patchblox.com/security/data/fix/linux/alas2023-2025-866.md) | Feb 26, 2025 | | Linux | clamav1.4-freshclam amzn 2023 | 1.4.2-1.amzn2023.0.1 | [ALAS2023-2025-866](https://patchblox.com/security/data/fix/linux/alas2023-2025-866.md) | Feb 26, 2025 | | Linux | clamav1.4-freshclam-debuginfo amzn 2023 | 1.4.2-1.amzn2023.0.1 | [ALAS2023-2025-866](https://patchblox.com/security/data/fix/linux/alas2023-2025-866.md) | Feb 26, 2025 | | Linux | clamav1.4-lib amzn 2023 | 1.4.2-1.amzn2023.0.1 | [ALAS2023-2025-866](https://patchblox.com/security/data/fix/linux/alas2023-2025-866.md) | Feb 26, 2025 | | Linux | clamav1.4-lib-debuginfo amzn 2023 | 1.4.2-1.amzn2023.0.1 | [ALAS2023-2025-866](https://patchblox.com/security/data/fix/linux/alas2023-2025-866.md) | Feb 26, 2025 | | Linux | clamav1.4-milter amzn 2023 | 1.4.2-1.amzn2023.0.1 | [ALAS2023-2025-866](https://patchblox.com/security/data/fix/linux/alas2023-2025-866.md) | Feb 26, 2025 | | Linux | clamav1.4-milter-debuginfo amzn 2023 | 1.4.2-1.amzn2023.0.1 | [ALAS2023-2025-866](https://patchblox.com/security/data/fix/linux/alas2023-2025-866.md) | Feb 26, 2025 | | Linux | clamd1.4 amzn 2023 | 1.4.2-1.amzn2023.0.1 | [ALAS2023-2025-866](https://patchblox.com/security/data/fix/linux/alas2023-2025-866.md) | Feb 26, 2025 | | Linux | clamd1.4-debuginfo amzn 2023 | 1.4.2-1.amzn2023.0.1 | [ALAS2023-2025-866](https://patchblox.com/security/data/fix/linux/alas2023-2025-866.md) | Feb 26, 2025 | | Linux | clamdscan Ubuntu 24.04.5 LTS (noble) | 1.0.8+dfsg-0ubuntu0.24.04.1 | [clamdscan 1.0.8+dfsg-0ubuntu0.24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-clamdscan-1.0.8-dfsg-0ubuntu0.24.04.1.md) | Jan 22, 2025 | | Linux | clamdscan Ubuntu 24.10 (oracular) | 1.4.2+dfsg-0ubuntu0.24.10.1 | [clamdscan 1.4.2+dfsg-0ubuntu0.24.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-clamdscan-1.4.2-dfsg-0ubuntu0.24.10.1.md) | Jan 23, 2025 | | Linux | libclamav11t64 Ubuntu 24.04.5 LTS (noble) | 1.0.8+dfsg-0ubuntu0.24.04.1 | [libclamav11t64 1.0.8+dfsg-0ubuntu0.24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libclamav11t64-1.0.8-dfsg-0ubuntu0.24.04.1.md) | Jan 22, 2025 | | Linux | libclamav12 Ubuntu 24.10 (oracular) | 1.4.2+dfsg-0ubuntu0.24.10.1 | [libclamav12 1.4.2+dfsg-0ubuntu0.24.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libclamav12-1.4.2-dfsg-0ubuntu0.24.10.1.md) | Jan 23, 2025 | --- Data as of 2026-11-08T00:53:09Z UTC. 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