{"action":"Upgrade biosig to 3.9.5-1 or later.","affected":[{"fixed":"3.9.5-1","introduced":"0"}],"component":"biosig","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["3.9.5-1"],"id":"tcs_01M5NP6VAN2XTRY7NKME9J4K3W","modified_at":"2026-10-08T09:47:26.542413323Z","published_at":"2025-12-11T17:15:58.233Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-66043","https://security-tracker.debian.org/tracker/CVE-2025-66043"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-66043#Debian:14/biosig","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-66043"}],"summary":"Several stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.1. A specially crafted MFER file can lead to arbitrary code execution."}