Local sensitive-data disclosure via cleartext kernel storage
Published Oct 14, 2025 · Updated Oct 14, 2025
Cleartext storage in the Windows Kernel in affected Windows 11 builds allows local users to bypass a security feature and read sensitive data. Microsoft has not disclosed which kernel component stores the information, how it is stored in cleartext, or how attackers access it. Local execution is required; no user interaction or prior privileges are required, and the reported consequence is confidentiality loss only.
Summary
What happened
Cleartext storage in the Windows Kernel in affected Windows 11 builds allows local users to bypass a security feature and read sensitive data. Microsoft has not disclosed which kernel component stores the information, how it is stored in cleartext, or how attackers access it. Local execution is required; no user interaction or prior privileges are required, and the reported consequence is confidentiality loss only.
The record
- CVE
- CVE-2025-55334
- Published
- Oct 14, 2025
- Updated
- Oct 14, 2025
- Vendor
- Microsoft
- Product
- Windows 11, version 25H2
- Classifications
- CWE-312
- Attack vector
- local
- 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=10.0.26200.0 <10.0.26200.6899
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.
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Technologies
Your stack
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Your stack
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