USN-8788-1: ClamAV vulnerabilities
ClamAV contains multiple denial-of-service vulnerabilities allowing remote crashes via crafted archive and document files.
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CVE-2026-20337
- CVSS 3.1
- 7.5 high
- EPSS
- <1%p42
- Published
- ·
- Modified
Description · NVD
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.
- Weakness
- CWE-120
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
In the news
2 storiesCisco Warns of Seven ClamAV Flaws, Two With Public PoCs
Cisco warns of seven ClamAV denial-of-service flaws in Secure Endpoint Connector, two with public PoCs; patches due in August.
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