CVE-2025-54492

{"id": "CVE-2025-54492", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "talos-cna@cisco.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "published": "2025-08-25T14:15:35.807", "references": [{"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2025-2234", "source": "talos-cna@cisco.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Primary", "source": "talos-cna@cisco.com", "description": [{"lang": "en", "value": "CWE-121"}]}], "descriptions": [{"lang": "en", "value": "A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). A specially crafted MFER file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.This vulnerability manifests on line 9141 of biosig.c on the current master branch (35a819fa), when the Tag is 67:\r\n\r\n else if (tag==67) //0x43: Sample skew\r\n {\r\n int skew=0; // [1]\r\n curPos += ifread(&skew, 1, len,hdr);\r\n\r\nIn this case, the address of the newly-defined integer `skew` \\[1\\] is overflowed instead of `buf`. This means a stack overflow can occur using much smaller values of `len` in this code path."}], "lastModified": "2025-08-25T20:24:45.327", "sourceIdentifier": "talos-cna@cisco.com"}