libbiosig vulnerabilities and fixes

Recent CVEs affecting libbiosig, with upgrade or downgrade steps. 27 tracked.

libbiosig has 27 tracked vulnerabilities, 23 critical. A fixed release or vendor patch exists for 17. Most recent: 2026-03-03. Highest priority: CVE-2026-22891 (score 60/100).

• CVE-2026-22891 CRITICAL 9.8 DOWNGRADE A heap-based buffer overflow vulnerability exists in the Intan CLP parsing functionality of The Biosig Project
• CVE-2026-20777 HIGH 8.1 DOWNGRADE A heap-based buffer overflow vulnerability exists in the Nicolet WFT parsing functionality of The Biosig Proje
• CVE-2025-64736 MEDIUM 6.1 DOWNGRADE An out-of-bounds read vulnerability exists in the ABF parsing functionality of The Biosig Project libbiosig 3.
• CVE-2025-54494 CRITICAL 9.8 UPGRADE A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project lib
• CVE-2025-54493 CRITICAL 9.8 UPGRADE A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project lib
• CVE-2025-54492 CRITICAL 9.8 UPGRADE A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project lib
• CVE-2025-54491 CRITICAL 9.8 UPGRADE A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project lib
• CVE-2025-54490 CRITICAL 9.8 UPGRADE A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project lib
• CVE-2025-54489 CRITICAL 9.8 UPGRADE A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project lib
• CVE-2025-54488 CRITICAL 9.8 UPGRADE A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project lib
• CVE-2025-54487 CRITICAL 9.8 UPGRADE A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project lib
• CVE-2025-54486 CRITICAL 9.8 UPGRADE A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project lib
• CVE-2025-54485 CRITICAL 9.8 UPGRADE A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project lib
• CVE-2025-54484 CRITICAL 9.8 UPGRADE A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project lib
• CVE-2025-54483 CRITICAL 9.8 UPGRADE A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project lib
• CVE-2025-54482 CRITICAL 9.8 UPGRADE A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project lib
• CVE-2025-54481 CRITICAL 9.8 UPGRADE A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project lib
• CVE-2025-54480 CRITICAL 9.8 UPGRADE A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project lib
• CVE-2025-54462 CRITICAL 9.8 UPGRADE A heap-based buffer overflow vulnerability exists in the Nex parsing functionality of The Biosig Project libbi
• CVE-2025-53853 CRITICAL 9.8 DOWNGRADE A heap-based buffer overflow vulnerability exists in the ISHNE parsing functionality of The Biosig Project lib
• CVE-2025-53557 CRITICAL 9.8 DOWNGRADE A heap-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project libb
• CVE-2025-53518 CRITICAL 9.8 DOWNGRADE An integer overflow vulnerability exists in the ABF parsing functionality of The Biosig Project libbiosig 3.9.
• CVE-2025-53511 CRITICAL 9.8 DOWNGRADE A heap-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project libb
• CVE-2025-52581 CRITICAL 9.8 DOWNGRADE An integer overflow vulnerability exists in the GDF parsing functionality of The Biosig Project libbiosig 3.9.
• CVE-2025-52461 HIGH 8.2 DOWNGRADE An out-of-bounds read vulnerability exists in the Nex parsing functionality of The Biosig Project libbiosig 3.
• CVE-2025-48005 CRITICAL 9.8 DOWNGRADE A heap-based buffer overflow vulnerability exists in the RHS2000 parsing functionality of The Biosig Project l
• CVE-2025-46411 HIGH 8.1 DOWNGRADE A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project lib

FAQ

How do I fix libbiosig vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is libbiosig being exploited right now?

None of the tracked libbiosig CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which libbiosig CVE should I patch first?

CVE-2026-22891 currently ranks highest (60/100): A heap-based buffer overflow vulnerability exists in the Intan CLP parsing functionality of The Biosig Project.

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