{"id":"CVE-2024-33659","aliases":["EUVD-2024-31375","GHSA-r8rq-6jrf-gqrw"],"status":"published","title":"BiosGuard Buffer Overflow and TOCTOU Vulnerability","description":"AMI APTIOV contains a vulnerability in BIOS where an attacker may cause an Improper Input Validation by a local attacker. Successful exploitation of these vulnerabilities may lead to overwriting arbitrary memory and execute arbitrary code at SMM level, also impacting Confidentiality, Integrity, and Availability.","severity":{"version":"4.0","score":5.7,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:L/VI:H/VA:H/SC:L/SI:L/SA:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0016,"percentile":0.05148,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2025-02-11T15:00:11Z","modified":"2026-06-17T07:32:10Z","products":[{"vendor":"ami","product":"aptio_v"},{"vendor":"ami","product":"aptiov"}],"references":[{"url":"https://9443417.fs1.hubspotusercontent-na1.net/hubfs/9443417/Security%20Advisories/2025/AMI-SA-2025002.pdf","tags":["Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-33659"},{"url":"https://github.com/advisories/GHSA-r8rq-6jrf-gqrw"}],"sources":{"cve":[{"id":"CVE-2024-33659","title":"BiosGuard Buffer Overflow and TOCTOU Vulnerability","description":"AMI APTIOV contains a vulnerability in BIOS where an attacker may cause an Improper Input Validation by a local attacker. Successful exploitation of these vulnerabilities may lead to overwriting arbitrary memory and execute arbitrary code at SMM level, also impacting Confidentiality, Integrity, and Availability.","status":"published","published":"2025-02-11T15:00:11.196Z","modified":"2025-02-11T15:36:38.156Z","cvss":[{"version":"4.0","score":5.7,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:L/VI:H/VA:H/SC:L/SI:L/SA:L","level":"medium","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:34:21.784174Z"}],"euvd":[{"id":"EUVD-2024-31375","description":"AMI APTIOV contains a vulnerability in BIOS where an attacker may cause an Improper Input Validation by a local attacker. Successful exploitation of these vulnerabilities may lead to overwriting arbitrary memory and execute arbitrary code at SMM level, also impacting Confidentiality, Integrity, and Availability.","status":"published","published":"2025-02-11T15:00:11Z","modified":"2025-02-11T15:36:38Z","cvss":[{"version":"4.0","score":5.7,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:L/VI:H/VA:H/SC:L/SI:L/SA:L","level":"medium"}],"updated_at":"2026-11-03T00:03:59.807436Z"}],"ghsa":[{"id":"GHSA-r8rq-6jrf-gqrw","title":"AMI APTIOV contains a vulnerability in BIOS where an attacker may cause an Improper Input...","description":"AMI APTIOV contains a vulnerability in BIOS where an attacker may cause an Improper Input Validation by a local attacker. Successful exploitation of these vulnerabilities may lead to overwriting arbitrary memory and execute arbitrary code at SMM level, also impacting Confidentiality, Integrity, and Availability.","status":"published","published":"2025-02-11T15:32:25Z","modified":"2025-10-02T15:31:12Z","cvss":[{"version":"4.0","score":5.7,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:L/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T15:03:50.19975Z"}],"nvd":[{"id":"CVE-2024-33659","description":"AMI APTIOV contains a vulnerability in BIOS where an attacker may cause an Improper Input Validation by a local attacker. Successful exploitation of these vulnerabilities may lead to overwriting arbitrary memory and execute arbitrary code at SMM level, also impacting Confidentiality, Integrity, and Availability.","status":"published","published":"2025-02-11T15:15:17.2Z","modified":"2026-06-17T07:32:10.69Z","cvss":[{"version":"4.0","score":5.7,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:L/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:10:44.033107Z"}]}}