Riskcovery

CVE-2026-20215

ClamAV 7Zip File Format Processing Out-of-Bounds Memory Corruption Vulnerability

State
Published
Severity
7.5 High
Published
Jul 1, 2026
Updated
Jul 1, 2026
Reserved
Oct 8, 2025

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hcisco

Weaknesses

  • CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Affected Products

ProductVersions
Cisco Secure EndpointCisco
  • 7.0.5Affected
  • 6.2.19Affected
  • 7.3.3Affected
  • 7.2.13Affected
  • 6.1.5Affected
  • 6.3.1Affected
  • 6.2.5Affected
  • 7.3.5Affected
  • 6.2.1Affected
  • 7.2.7Affected
  • 7.1.1Affected
  • 6.3.5Affected
  • 6.2.9Affected
  • 7.3.1Affected
  • 6.1.7Affected
  • 7.2.11Affected
  • 7.2.3Affected
  • 7.1.5Affected
  • 6.3.3Affected
  • 7.3.9Affected
  • 6.2.3Affected
  • 6.1.9Affected
  • 6.0.9Affected
  • 7.2.5Affected
  • 6.0.7Affected
  • and 121 more versions

References

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