Local privilege escalation via use-after-free
Published Jun 9, 2026 · Updated Jun 9, 2026
Use-after-free in Windows DWM Core Library in Microsoft Windows 11 version 26H1 allows local users to elevate privileges. Microsoft identifies memory reuse after deallocation in the DWM Core Library but has not disclosed the affected routine or attacker-controlled operation. A low-privileged local account is required, and successful exploitation grants elevated control over confidentiality, integrity, and availability.
Summary
What happened
Use-after-free in Windows DWM Core Library in Microsoft Windows 11 version 26H1 allows local users to elevate privileges. Microsoft identifies memory reuse after deallocation in the DWM Core Library but has not disclosed the affected routine or attacker-controlled operation. A low-privileged local account is required, and successful exploitation grants elevated control over confidentiality, integrity, and availability.
The record
- CVE
- CVE-2026-44804
- Published
- Jun 9, 2026
- Updated
- Jun 9, 2026
- Vendor
- Microsoft
- Product
- Windows 11, version 26H1
- Classifications
- CWE-416, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 9, 2026CVE publishedPublication date reported by the CVE source.
- Jun 9, 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=10.0.28000.0 <10.0.28000.2269
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
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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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