Secure Boot bypass via undisclosed TOCTOU race
Published Apr 9, 2024 · Updated May 3, 2025
Secure Boot bypass in Microsoft Windows allows physically proximate attackers to subvert boot trust through a race condition. Microsoft identifies a time-of-check time-of-use race but has not disclosed the affected code locus or the incorrect operation on mutable input. Exploitation requires adjacent access, user interaction, and winning a high-complexity race, and can compromise the boot trust boundary.
Summary
What happened
Secure Boot bypass in Microsoft Windows allows physically proximate attackers to subvert boot trust through a race condition. Microsoft identifies a time-of-check time-of-use race but has not disclosed the affected code locus or the incorrect operation on mutable input. Exploitation requires adjacent access, user interaction, and winning a high-complexity race, and can compromise the boot trust boundary.
The record
- CVE
- CVE-2024-29062
- Published
- Apr 9, 2024
- Updated
- May 3, 2025
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-367, T1542.003
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 9, 2024CVE publishedPublication date reported by the CVE source.
- May 3, 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=10.0.10240.0 <10.0.10240.20596
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
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.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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