SYSTEM privilege escalation via ALPC race condition
Published Nov 9, 2022 · Updated Aug 10, 2026
Race condition in Microsoft Windows ALPC allows local users with low privileges to gain SYSTEM privileges by winning a timing race. Microsoft has not disclosed the specific ALPC code locus, shared resource, or unsynchronized operation that creates the race window. Exploitation requires low-privileged code execution on the target and timing control sufficient to win the race; success escapes a contained execution environment and grants SYSTEM privileges.
Summary
What happened
Race condition in Microsoft Windows ALPC allows local users with low privileges to gain SYSTEM privileges by winning a timing race. Microsoft has not disclosed the specific ALPC code locus, shared resource, or unsynchronized operation that creates the race window. Exploitation requires low-privileged code execution on the target and timing control sufficient to win the race; success escapes a contained execution environment and grants SYSTEM privileges.
The record
- CVE
- CVE-2022-41045
- Published
- Nov 9, 2022
- Updated
- Aug 10, 2026
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-362, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Nov 9, 2022CVE 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?
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- Affected versionversion=10.0.10240.0 <10.0.10240.19567
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.
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Technologies
Your stack
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Your stack
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