Buffer Overflow Affecting clamav package, versions [,1.4.5)[1.4.0,1.5.3)
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.
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Test your applications- Snyk IDSNYK-UNMANAGED-CLAMAV-17812667
- published4 Jul 2026
- disclosed1 Jul 2026
- creditUnknown
Introduced: 1 Jul 2026
CVE-2026-20243 (opens in a new tab)How to fix?
Upgrade clamav to version 1.4.5, 1.5.3 or higher.
Overview
Affected versions of this package are vulnerable to Buffer Overflow in the ALZ file parsing process. An attacker can cause memory corruption and terminate the scanning process by submitting a specially crafted ALZ file for scanning. This could disrupt services that rely on the scanning process for malware detection.