Local sensitive information disclosure
Published Jul 14, 2026 · Updated Jul 14, 2026
Information disclosure in Microsoft Windows Win32K allows local users to read sensitive information on affected Windows 10, 11, and Server builds. Microsoft has not published the Win32K code path, data source, or faulty operation that exposes the information. Exploitation requires low-privileged local access and needs no user interaction; the documented consequence is confidentiality loss only.
Summary
What happened
Information disclosure in Microsoft Windows Win32K allows local users to read sensitive information on affected Windows 10, 11, and Server builds. Microsoft has not published the Win32K code path, data source, or faulty operation that exposes the information. Exploitation requires low-privileged local access and needs no user interaction; the documented consequence is confidentiality loss only.
The record
- CVE
- CVE-2026-56184
- Published
- Jul 14, 2026
- Updated
- Jul 14, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2025 (Server Core installation)
- Classifications
- CWE-200, T1005
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 14, 2026CVE publishedPublication date reported by the CVE source.
- Jul 14, 2026Record 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 <10.0.26100.33158
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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