Local code execution via BIOS TOCTOU race
Published Mar 11, 2025 · Updated Mar 11, 2025
A TOCTOU race condition in American Megatrends International Aptio V BIOS allows local users to execute arbitrary code through local access. AMI identifies a time-sensitive check-and-use sequence in the BIOS but does not disclose the affected code path, checked object, or attacker-controlled input. Exploitation requires high privileges and a difficult local race, and successful exploitation executes code across the original security boundary.
Summary
What happened
A TOCTOU race condition in American Megatrends International Aptio V BIOS allows local users to execute arbitrary code through local access. AMI identifies a time-sensitive check-and-use sequence in the BIOS but does not disclose the affected code path, checked object, or attacker-controlled input. Exploitation requires high privileges and a difficult local race, and successful exploitation executes code across the original security boundary.
The record
- CVE
- CVE-2024-54084
- Published
- Mar 11, 2025
- Updated
- Mar 11, 2025
- Vendor
- American Megatrends International
- Product
- Aptio V
- Classifications
- CWE-367, T1068
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Mar 11, 2025CVE publishedPublication date reported by the CVE source.
- Mar 11, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=BKS_5.0 <=BKS_5.38
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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