What’s Vulnerable › Vulnerabilities
CVE-2026-20338: ClamAV ZIP File Format Processing Memory Corruption Vulnerability
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.6% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-07 · updated 2026-10-23
- Weakness: CWE-415
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 memory handling when processing content in zip files during scanning. 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 as a result of a memory double-free, resulting in a DoS condition on the affected software.
Affected products
- Cisco Secure Endpoint: 7.0.5, 6.2.19, 7.3.3, 7.2.13, 6.1.5, 6.3.1 (+140)
References
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