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cve recordhigh

CVE-2026-20215

cisco · secure endpoint

Published
CVSS7.5
Severityhigh
WeaknessCWE-120
ExploitedNot in CISA KEV

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

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 terminate, resulting in a DoS condition on the affected software.

References

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Our coverage of CVE-2026-20215

CVE-2026-20215high

ClamAV Vulnerability Allows Remote Code Execution

Cisco has released an update for ClamAV to address a critical vulnerability that could allow remote code execution. The flaw, identified as CVE-2026-20215, affects the open-source antivirus engine and stems from an integer overflow during the parsing of 7z archive files.