Riskcovery

CVE-2026-20337

ClamAV ZIP File Format Processing Memory Corruption Vulnerability

State
Published
Severity
7.5 High
Published
Aug 7, 2026
Updated
Aug 7, 2026
Reserved
Oct 8, 2025

Read the record on cve.org

Description

A vulnerability in the zip archive parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device.

This vulnerability is due to improper boundary checks for content in zip files during scanning, which may result in an out-of-bounds write condition. An attacker could exploit this vulnerability by submitting a crafted zip file for scanning. 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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