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-2026-20339
- CVSS 3.1
- 7.5 high
- EPSS
- <1%p39
- Published
- ·
- Modified
Description · NVD
A vulnerability in the PESpin file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition or possibly other expanded impacts as a result of memory corruption on an affected device. This vulnerability is due to improper boundary checks for content in PESpin files during scanning, which may result in an integer overflow. An attacker could exploit this vulnerability by submitting a crafted file that contains PESpin 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.
- Weakness
- CWE-190
- 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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