{"id":"CVE-2023-20578","state":"PUBLISHED","title":"A TOCTOU (Time-Of-Check-Time-Of-Use) in SMM may allow","description":"A TOCTOU (Time-Of-Check-Time-Of-Use) in SMM may allow\nan attacker with ring0 privileges and access to the\nBIOS menu or UEFI shell to modify the communications buffer potentially\nresulting in arbitrary code execution.","publishedAt":"2024-08-13T16:52:58.457Z","updatedAt":"2025-03-18T20:03:43.905Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H","source":"AMD"},"assigner":"AMD","products":["AMD AMD EPYC™ 7001 Processors","AMD AMD EPYC™ 7002 Processors","AMD AMD EPYC™ 7003 Processors","AMD AMD EPYC™ 9004 Processors","AMD AMD Ryzen™ 7000 Series Desktop Processors","AMD AMD Ryzen™ Threadripper™ PRO 5000WX Processors","AMD AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics","AMD AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics","AMD AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics","AMD 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