SYSTEM privilege escalation via security-attribute copy race
Published Jun 11, 2024 · Updated Aug 10, 2026
Privilege escalation in the Windows Kernel on Windows 10, Windows 11, and Windows Server allows local users to gain SYSTEM privileges. The AuthzBasepCopyoutInternalSecurityAttributes routine validates a user-mode destination pointer, then later copies token security attributes through that pointer, allowing a race to redirect the kernel write. Successful exploitation requires local low-privileged access and winning the race; the resulting kernel-memory write enables SYSTEM-level code execution.
Summary
What happened
Privilege escalation in the Windows Kernel on Windows 10, Windows 11, and Windows Server allows local users to gain SYSTEM privileges. The AuthzBasepCopyoutInternalSecurityAttributes routine validates a user-mode destination pointer, then later copies token security attributes through that pointer, allowing a race to redirect the kernel write. Successful exploitation requires local low-privileged access and winning the race; the resulting kernel-memory write enables SYSTEM-level code execution.
The record
- CVE
- CVE-2024-30088
- Published
- Jun 11, 2024
- Updated
- Aug 10, 2026
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-367, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 11, 2024CVE publishedPublication date reported by the CVE source.
- Oct 15, 2024Exploitation reportedCISA Known Exploited Vulnerabilities Catalog entry
- 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.
Weakness, pattern, technique
Public exploit references
- Collateral Damagefunctional · demonstrated
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Reported exploitation
- CISA Known Exploited Vulnerabilities Catalog entryknown exploited catalog
Technologies
Your stack
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Your stack
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