Protected-data access via undisclosed workflow flaw
Published Oct 14, 2025 · Updated Oct 14, 2025
BitLocker security feature bypass in affected Windows 11 and Windows Server builds allows physically proximate attackers to access protected data. Microsoft has not published the affected BitLocker workflow or the incorrect operation that permits the bypass. Physical access is required; the vendor assessment reports unauthorized disclosure and modification of protected data without service interruption.
Summary
What happened
BitLocker security feature bypass in affected Windows 11 and Windows Server builds allows physically proximate attackers to access protected data. Microsoft has not published the affected BitLocker workflow or the incorrect operation that permits the bypass. Physical access is required; the vendor assessment reports unauthorized disclosure and modification of protected data without service interruption.
The record
- CVE
- CVE-2025-55330
- Published
- Oct 14, 2025
- Updated
- Oct 14, 2025
- Vendor
- Microsoft
- Product
- Windows Server 2025 (Server Core installation)
- Classifications
- CWE-841
- Attack vector
- physical
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 14, 2025CVE publishedPublication date reported by the CVE source.
- Oct 14, 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=10.0.26100.0 <10.0.26100.6899
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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