SYSTEM privilege escalation via Win32k use-after-free
Published Jun 11, 2024 · Updated Aug 10, 2026
Use-after-free in the Win32 kernel subsystem in Microsoft Windows allows local users to elevate privileges to SYSTEM. Microsoft identifies the weakness as use-after-free but has not disclosed the affected Win32k object, routine, or sequence that reuses freed memory. Exploitation requires an authenticated low-privileged local context and grants SYSTEM-level control over confidentiality, integrity, and availability.
Summary
What happened
Use-after-free in the Win32 kernel subsystem in Microsoft Windows allows local users to elevate privileges to SYSTEM. Microsoft identifies the weakness as use-after-free but has not disclosed the affected Win32k object, routine, or sequence that reuses freed memory. Exploitation requires an authenticated low-privileged local context and grants SYSTEM-level control over confidentiality, integrity, and availability.
The record
- CVE
- CVE-2024-30086
- Published
- Jun 11, 2024
- Updated
- Aug 10, 2026
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-416, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 11, 2024CVE publishedPublication date reported by the CVE source.
- Aug 10, 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=10.0.10240.0 <10.0.10240.20680
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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