SYSTEM privilege escalation via ALPC race condition
Published Apr 15, 2022 · Updated Jan 2, 2025
Elevation of privilege in Windows ALPC allows local users with low privileges to obtain SYSTEM access through a race condition. Microsoft identifies improper synchronization of a shared ALPC resource but has not disclosed the raced operation or affected code path. Exploitation requires local low-privilege access and attacker-controlled race timing; success completely compromises the host.
Summary
What happened
Elevation of privilege in Windows ALPC allows local users with low privileges to obtain SYSTEM access through a race condition. Microsoft identifies improper synchronization of a shared ALPC resource but has not disclosed the raced operation or affected code path. Exploitation requires local low-privilege access and attacker-controlled race timing; success completely compromises the host.
The record
- CVE
- CVE-2022-24540
- Published
- Apr 15, 2022
- Updated
- Jan 2, 2025
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-362, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 15, 2022CVE publishedPublication date reported by the CVE source.
- Jan 2, 2025Record 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 <10.0.10240.19265
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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