Local Secure Boot bypass via signature verification
Published Apr 9, 2024 · Updated May 3, 2025
Secure Boot bypass in Microsoft Windows allows local users to defeat boot-time code integrity through improper signature verification. Microsoft has not disclosed the affected boot component or the precise validation error that accepts untrusted code. Exploitation requires local access and high complexity; successful exploitation bypasses Secure Boot, but the resulting attacker actions remain undisclosed.
Summary
What happened
Secure Boot bypass in Microsoft Windows allows local users to defeat boot-time code integrity through improper signature verification. Microsoft has not disclosed the affected boot component or the precise validation error that accepts untrusted code. Exploitation requires local access and high complexity; successful exploitation bypasses Secure Boot, but the resulting attacker actions remain undisclosed.
The record
- CVE
- CVE-2024-26194
- Published
- Apr 9, 2024
- Updated
- May 3, 2025
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-347, T1542.003
- Attack vector
- local
- 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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