Local privilege escalation via undisclosed TOCTOU race
Published Jan 10, 2023 · Updated Jan 1, 2025
A TOCTOU race condition in Microsoft Message Queuing on affected Windows releases allows local users to elevate privileges. Microsoft identifies CWE-367 but has not disclosed the MSMQ resource involved or the check and use operations that can be raced. Successful exploitation requires local low-privilege access and grants elevated privileges, while the resulting privilege level remains undisclosed.
Summary
What happened
A TOCTOU race condition in Microsoft Message Queuing on affected Windows releases allows local users to elevate privileges. Microsoft identifies CWE-367 but has not disclosed the MSMQ resource involved or the check and use operations that can be raced. Successful exploitation requires local low-privilege access and grants elevated privileges, while the resulting privilege level remains undisclosed.
The record
- CVE
- CVE-2023-21537
- Published
- Jan 10, 2023
- Updated
- Jan 1, 2025
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-367, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 10, 2023CVE publishedPublication date reported by the CVE source.
- Jan 1, 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 <10.0.10240.19685
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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