{"id":"CVE-2023-20596","aliases":["EUVD-2023-24775","GHSA-r2mq-3mfq-2p2w"],"status":"published","title":"Improper input validation in the SMM Supervisor may allow an attacker with a compromised SMI...","description":"Improper input validation in the SMM Supervisor may allow an attacker with a compromised SMI handler to gain Ring0 access potentially leading to arbitrary code execution.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01045,"percentile":0.64369,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2023-11-14T18:55:14Z","modified":"2026-06-17T05:30:23Z","products":[{"vendor":"amd","product":"amd ryzen™ 6000 series processors with radeon™ graphics \"rembrandt\""},{"vendor":"amd","product":"amd ryzen™ 7035 series processors with radeon™ graphics 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5000 series desktop processor with radeon™ graphics formerly codenamed “cezanne” am4"},{"vendor":"amd","product":"ryzen™ 5000 series mobile processors with radeon™ graphics “cezanne”"},{"vendor":"amd","product":"ryzen™ 7000 series  desktop processors  with radeon™ graphics formerly codenamed “raphael”"},{"vendor":"amd","product":"ryzen™ 7000 series desktop processors with radeon™ graphics formerly codenamed “raphael” x3d"},{"vendor":"amd","product":"ryzen™ 7040 series mobile processors with radeon™ graphics formerly codenamed “phoenix”"}],"references":[{"url":"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-7011","tags":["vendor-advisory","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-20596"},{"url":"https://github.com/advisories/GHSA-r2mq-3mfq-2p2w"}],"sources":{"cve":[{"id":"CVE-2023-20596","description":"Improper input validation in the SMM Supervisor may allow an attacker with a compromised SMI handler to gain Ring0 access potentially leading to arbitrary code execution.\n\n\n\n\n\n\n\n\n","status":"published","published":"2023-11-14T18:55:14.665Z","modified":"2024-08-02T09:05:36.288Z","updated_at":"2026-11-02T14:35:13.368958Z"}],"euvd":[{"id":"EUVD-2023-24775","description":"Improper input validation in the SMM Supervisor may allow an attacker with a compromised SMI handler to gain Ring0 access potentially leading to arbitrary code execution.\n\n\n\n\n\n\n\n\n","status":"published","published":"2023-11-14T18:55:14Z","modified":"2024-08-02T09:05:36Z","cvss":[{"version":"","score":0,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"none"}],"updated_at":"2026-11-03T03:50:08.95234Z"}],"ghsa":[{"id":"GHSA-r2mq-3mfq-2p2w","title":"Improper input validation in the SMM Supervisor may allow an attacker with a compromised SMI...","description":"Improper input validation in the SMM Supervisor may allow an attacker with a compromised SMI handler to gain Ring0 access potentially leading to arbitrary code execution.\n\n\n\n\n\n\n\n\n","status":"published","published":"2023-11-14T21:31:00Z","modified":"2023-11-30T05:10:37Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T14:55:07.446793Z"}],"nvd":[{"id":"CVE-2023-20596","description":"Improper input validation in the SMM Supervisor may allow an attacker with a compromised SMI handler to gain Ring0 access potentially leading to arbitrary code execution.\n\n\n\n\n\n\n\n\n","status":"published","published":"2023-11-14T19:15:16.083Z","modified":"2026-06-17T05:30:23.817Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"updated_at":"2026-11-02T14:08:46.647045Z"}]}}