{"id":"CVE-2023-20591","aliases":["EUVD-2023-24770","GHSA-v8c4-4ghf-7jv6"],"status":"published","title":"Improper re-initialization of IOMMU during the DRTM event\nmay permit an untrusted platform...","description":"Improper re-initialization of IOMMU during the DRTM event\nmay permit an untrusted platform configuration to persist, allowing an attacker\nto read or modify hypervisor memory, potentially resulting in loss of\nconfidentiality, integrity, and availability.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00299,"percentile":0.22801,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-665"],"published":"2024-08-13T16:53:23Z","modified":"2026-06-17T05:30:22Z","products":[{"vendor":"amd","product":"amd epyc™ 7003  series processors"},{"vendor":"amd","product":"amd epyc™ 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Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-20591"},{"url":"https://github.com/advisories/GHSA-v8c4-4ghf-7jv6"}],"sources":{"cve":[{"id":"CVE-2023-20591","description":"Improper re-initialization of IOMMU during the DRTM event\nmay permit an untrusted platform configuration to persist, allowing an attacker\nto read or modify hypervisor memory, potentially resulting in loss of\nconfidentiality, integrity, and availability.","status":"published","published":"2024-08-13T16:53:23.681Z","modified":"2025-03-13T16:41:15.645Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-665"],"updated_at":"2026-11-02T14:35:13.912858Z"}],"euvd":[{"id":"EUVD-2023-24770","description":"Improper re-initialization of IOMMU during the DRTM event\nmay permit an untrusted platform configuration to persist, allowing an attacker\nto read or modify hypervisor memory, potentially resulting in loss of\nconfidentiality, integrity, and availability.","status":"published","published":"2024-08-13T16:53:23Z","modified":"2025-03-13T16:41:15Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L","level":"medium"}],"updated_at":"2026-11-02T20:53:04.82001Z"}],"ghsa":[{"id":"GHSA-v8c4-4ghf-7jv6","title":"Improper re-initialization of IOMMU during the DRTM event\nmay permit an untrusted platform...","description":"Improper re-initialization of IOMMU during the DRTM event\nmay permit an untrusted platform configuration to persist, allowing an attacker\nto read or modify hypervisor memory, potentially resulting in loss of\nconfidentiality, integrity, and availability.","status":"published","published":"2024-08-13T18:31:15Z","modified":"2024-12-12T21:31:49Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-665"],"updated_at":"2026-11-02T14:59:09.80967Z"}],"nvd":[{"id":"CVE-2023-20591","description":"Improper re-initialization of IOMMU during the DRTM event\nmay permit an untrusted platform configuration to persist, allowing an attacker\nto read or modify hypervisor memory, potentially resulting in loss of\nconfidentiality, integrity, and 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