{"id":"CVE-2023-20518","aliases":["EUVD-2023-24697","GHSA-rj66-wvw5-rcvp"],"status":"published","title":"Incomplete cleanup in the ASP may expose the Master Encryption Key (MEK) to a privileged attacker...","description":"Incomplete cleanup in the ASP may expose the Master Encryption Key (MEK) to a privileged attacker with access to the BIOS menu or UEFI shell and a memory exfiltration vulnerability, potentially resulting in loss of confidentiality.","severity":{"version":"3.1","score":1.9,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00096,"percentile":0.0068,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-459"],"published":"2024-08-13T16:52:55Z","modified":"2026-06-17T05:30:14Z","products":[{"vendor":"amd","product":"amd athlon™ 3000 series desktop processors with radeon™ graphics"},{"vendor":"amd","product":"amd athlon™ 3000 series mobile  processors with radeon™ graphics"},{"vendor":"amd","product":"amd epyc™ 9004 series processors"},{"vendor":"amd","product":"amd ryzen™ 3000 series desktop processors"},{"vendor":"amd","product":"amd ryzen™ 3000 series mobile processor with radeon™ graphics"},{"vendor":"amd","product":"amd ryzen™ 3000 series processors with radeon™ graphics"},{"vendor":"amd","product":"amd ryzen™ 4000 series desktop processors with radeon™ graphics"},{"vendor":"amd","product":"amd ryzen™ 4000 series mobile processors with radeon™ graphics"},{"vendor":"amd","product":"amd ryzen™ 5000 series desktop processor with radeon™ graphics"},{"vendor":"amd","product":"amd ryzen™ 5000 series desktop processors"},{"vendor":"amd","product":"amd ryzen™ 5000 series mobile processors with radeon™ graphics"},{"vendor":"amd","product":"amd ryzen™ 5000 series processors with radeon™ graphics"},{"vendor":"amd","product":"amd ryzen™ 6000 series processors with radeon™ graphics"},{"vendor":"amd","product":"amd ryzen™ 7000 series desktop processors"},{"vendor":"amd","product":"amd ryzen™ 7020 series processors with radeon™ graphics"},{"vendor":"amd","product":"amd ryzen™ 7035 series processors with radeon™ graphics"},{"vendor":"amd","product":"amd ryzen™ embedded 5000 series processors"},{"vendor":"amd","product":"amd ryzen™ embedded 7000 series processors"},{"vendor":"amd","product":"amd ryzen™ embedded r1000 series processors"},{"vendor":"amd","product":"amd ryzen™ embedded r2000 series processors"},{"vendor":"amd","product":"amd ryzen™ embedded v1000 series processors"},{"vendor":"amd","product":"amd ryzen™ embedded v2000 series processors"},{"vendor":"amd","product":"amd ryzen™ embedded v3000 series processors"},{"vendor":"amd","product":"amd ryzen™ threadripper™ 3000 series processors"},{"vendor":"amd","product":"amd ryzen™ threadripper™ pro 3000wx series processors"},{"vendor":"amd","product":"amd ryzen™ threadripper™ pro 5000wx processors"}],"references":[{"url":"https://www.amd.com/en/resources/product-security/bulletin/amd-sb-3003.html","tags":["vendor-advisory"]},{"url":"https://www.amd.com/en/resources/product-security/bulletin/amd-sb-5002.html"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-20518"},{"url":"https://github.com/advisories/GHSA-rj66-wvw5-rcvp"}],"sources":{"cve":[{"id":"CVE-2023-20518","description":"Incomplete cleanup in the ASP may expose the Master Encryption Key (MEK) to a privileged attacker with access to the BIOS menu or UEFI shell and a memory exfiltration vulnerability, potentially resulting in loss of confidentiality.","status":"published","published":"2024-08-13T16:52:55.976Z","modified":"2024-11-05T17:10:30.17Z","cvss":[{"version":"3.1","score":1.9,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-459"],"updated_at":"2026-11-02T14:35:13.912858Z"}],"euvd":[{"id":"EUVD-2023-24697","description":"Incomplete cleanup in the ASP 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confidentiality.","status":"published","published":"2024-08-13T18:31:15Z","modified":"2024-11-05T18:33:05Z","cvss":[{"version":"3.1","score":1.9,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N","level":"low"}],"cwes":["CWE-459"],"updated_at":"2026-11-02T14:58:44.254109Z"}],"nvd":[{"id":"CVE-2023-20518","description":"Incomplete cleanup in the ASP may expose the Master Encryption Key (MEK) to a privileged attacker with access to the BIOS menu or UEFI shell and a memory exfiltration vulnerability, potentially resulting in loss of confidentiality.","status":"published","published":"2024-08-13T17:15:19.33Z","modified":"2026-06-17T05:30:14.657Z","cvss":[{"version":"3.1","score":1.9,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N","level":"low","assessor":"secondary"}],"cwes":["CWE-459"],"updated_at":"2026-11-02T14:09:17.205287Z"}]}}