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A vulnerability in the Object Linking and Embedding 2 (OLE2) decryption routine of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to an integer underflow in a bounds check that allows for a heap buffer overflow read. An attacker could exploit this vulnerability by submitting a crafted file containing OLE2 content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the ClamAV scanning process, resulting in a DoS condition on the affected software. For a description of this vulnerability, see the . Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade clamav | Aug 8, 2025 | Jan 22, 2025 |
| Amazon_linux_2023 | — | Upgrade clamd1.4Upgrade clamav1.4-develUpgrade clamav1.4-freshclamUpgrade clamav1.4-libUpgrade clamd1.4-debuginfoUpgrade clamav1.4Upgrade clamav1.4-dataUpgrade clamav1.4-milter-debuginfoUpgrade clamav1.4-lib-debuginfoUpgrade clamav1.4-filesystemUpgrade clamav1.4-freshclam-debuginfoUpgrade clamav1.4-debuginfoUpgrade clamav1.4-milterUpgrade clamav1.4-docUpgrade clamav1.4-debugsource | Mar 10, 2025 | Jan 22, 2025 |
| Debian | — | Upgrade clamav | May 15, 2025 | Jan 22, 2025 |
| Freebsd | — | Upgrade clamavUpgrade clamav-lts | Jan 24, 2025 | Jan 23, 2025 |
| Suse | — | Upgrade clamav-develUpgrade libclammspack0Upgrade clamav-docs-htmlUpgrade clamav-milterUpgrade libfreshclam3Upgrade clamavUpgrade libclamav12 | Feb 5, 2025 | Jan 22, 2025 |
| Ubuntu | — | Upgrade clamav | Jan 30, 2025 | Jan 22, 2025 |
| Zimbra Collaboration | — | Upgrade Zimbra Collaboration to the latest version | May 19, 2025 | Jan 22, 2025 |
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