Local privilege escalation via freed object reuse
Published Apr 14, 2026 · Updated Apr 14, 2026
Use-after-free in Desktop Window Manager in Microsoft Windows allows local users to elevate privileges by triggering unsafe object reuse. Microsoft has not published the affected function or the sequence that frees and later reuses the Desktop Window Manager object. Successful exploitation requires an authenticated local user and can grant high-privilege control over data and system availability.
Summary
What happened
Use-after-free in Desktop Window Manager in Microsoft Windows allows local users to elevate privileges by triggering unsafe object reuse. Microsoft has not published the affected function or the sequence that frees and later reuses the Desktop Window Manager object. Successful exploitation requires an authenticated local user and can grant high-privilege control over data and system availability.
The record
- CVE
- CVE-2026-27923
- Published
- Apr 14, 2026
- Updated
- Apr 14, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-416, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 14, 2026CVE publishedPublication date reported by the CVE source.
- Apr 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=10.0.17763.0 <10.0.17763.8644
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.
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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