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Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-20578"},{"url":"https://github.com/advisories/GHSA-3phx-v48r-rmwc"}],"sources":{"cve":[{"id":"CVE-2023-20578","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.","status":"published","published":"2024-08-13T16:52:58.457Z","modified":"2025-03-18T20:03:43.905Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-367"],"updated_at":"2026-11-02T14:35:13.912858Z"}],"euvd":[{"id":"EUVD-2023-24757","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 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