Local privilege escalation through ALPC race condition
Published Nov 9, 2022 · Updated Aug 10, 2026
Race condition in Microsoft Windows ALPC allows local users with low privileges to elevate privileges across affected Windows releases. Microsoft has not published the exact ALPC code locus or the incorrect shared-resource operation that creates the timing window. Exploitation requires local low-privileged access, no user interaction, and winning a high-complexity race; successful exploitation crosses a security boundary.
Summary
What happened
Race condition in Microsoft Windows ALPC allows local users with low privileges to elevate privileges across affected Windows releases. Microsoft has not published the exact ALPC code locus or the incorrect shared-resource operation that creates the timing window. Exploitation requires local low-privileged access, no user interaction, and winning a high-complexity race; successful exploitation crosses a security boundary.
The record
- CVE
- CVE-2022-41093
- 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?
Compare these published version ranges with your installed build and any vendor patches.
- 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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