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ClamAV

0 mentions in 7 days · 0 in 30 days · 2 total · first seen Aug 13, 2026 · last Aug 13, 2026

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ClamAV Vulnerabilities Affecting Cisco Products: August 2026

Cisco patched ClamAV vulnerabilities that allow remote attackers to cause denial-of-service conditions, rated High only for Windows-based platforms.

Cisco released an advisory covering multiple ClamAV vulnerabilities that could let a remote attacker interrupt scanning operations with a denial of service. Software updates are available for affected Cisco platforms, and no workarounds exist. The Security Impact Rating is High for Windows-based platforms because ClamAV runs there in a privileged security context.

Cisco Security AdvisoriesAug 13, 20:11 UTC · Aug 13, 2026Advisory

ZDI-26-583: Clam AntiVirus 7z Archive Parsing Integer Overflow Remote Code Execution Vulnerability

Zero Day Initiative discloses CVE-2026-20215, an integer overflow in ClamAV's 7z archive parsing enabling remote code execution, rated CVSS 8.4.

The Zero Day Initiative published ZDI-26-583 for an integer overflow in Clam AntiVirus's 7z archive parsing. A remote attacker can execute arbitrary code when the antivirus processes a crafted archive, with attack vectors varying by implementation. The flaw is tracked as CVE-2026-20215 and rated CVSS 8.4. The advisory does not mention active exploitation.

ZDI Published AdvisoriesAug 13, 05:00 UTC · Aug 13, 2026Vulnerability CVE-2026-20215

Related CVEsby mentions

CVE-2026-202157.5<1%
A vulnerability in the 7z file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition, or possibly other expanded impa
A vulnerability in the 7z file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition, or possibly other expanded impacts, resulting from memory corruption on an affected device. This vulnerability is due to improper boundary checks for content in 7z files during scanning, which may result in an out-of-bounds buffer write. An attacker could exploit this vulnerability by submitting a crafted file that contains 7z content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to…
· cisco secure endpoint · cisco clamav—

Appears with

organization Zero Day Initiative 1 product Cisco products 1 product Clam AntiVirus 1 product ClamAV 1 vendor Cisco 1 vendor Zero Day Initiative 1

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