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.
Published: 2026-08-07
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Sat, 08 Aug 2026 21:15:00 +0000

Type Values Removed Values Added
First Time appeared Cisco
Cisco secure Endpoint
Vendors & Products Cisco
Cisco secure Endpoint

Fri, 07 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 07 Aug 2026 16:45:00 +0000

Type Values Removed Values Added
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.
Title ClamAV ZIP File Format Processing Memory Corruption Vulnerability
Weaknesses CWE-120
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Subscriptions

Cisco Secure Endpoint
cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2026-08-07T18:11:57.408Z

Reserved: 2025-10-08T11:59:15.413Z

Link: CVE-2026-20337

cve-icon Vulnrichment

Updated: 2026-08-07T18:11:54.077Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-07T17:17:02.413

Modified: 2026-08-11T18:54:19.877

Link: CVE-2026-20337

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-08T20:53:00Z

Weaknesses