A TOCTOU (Time-Of-Check-Time-Of-Use) in SMM may allow an attacker with ring0 privileges and access to the BIOS menu or UEFI shell to modify the communications buffer potentially resulting in arbitrary code execution.
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Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2024-08-13. NVD baseline CVSS 7.5; sources differ by 0.0.
A TOCTOU (Time-Of-Check-Time-Of-Use) in SMM may allow an attacker with ring0 privileges and access to the BIOS menu or UEFI shell to modify the communications buffer potentially resulting in arbitrary code execution.
August 13, 2024
March 18, 2025
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