Heap-based Buffer Overflow Affecting clamav package, versions [,1.0.9)[1.1.0-rc,1.4.3)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-UNMANAGED-CLAMAV-10500270
- published25 Jun 2025
- disclosed18 Jun 2025
- creditGreg Walkup
Introduced: 18 Jun 2025
NewCVE-2025-20260 (opens in a new tab)How to fix?
Upgrade clamav to version 1.0.9, 1.4.3 or higher.
Overview
Affected versions of this package are vulnerable to Heap-based Buffer Overflow through the ascii85decode function, when scanning PDF files. An unauthenticated, remote attacker can cause a buffer overflow condition, a denial of service, or execute arbitrary code on an affected systems.