Stack-based Buffer Overflow Affecting libbiosig package, versions [,3.9.1)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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-LIBBIOSIG-12205658
- published27 Aug 2025
- disclosed25 Aug 2025
- creditMark Bereza,Lilith
Introduced: 25 Aug 2025
NewCVE-2025-54490 (opens in a new tab)How to fix?
Upgrade libbiosig to version 3.9.1 or higher.
Overview
Affected versions of this package are vulnerable to Stack-based Buffer Overflow in the MFER parsing functionality. An attacker can execute arbitrary code by supplying a specially crafted file that causes a stack-based buffer overflow in the tmp buffer when the Tag is 64 and the length field exceeds 256 bytes.