Local privilege escalation via Win32k out-of-bounds read
Published May 9, 2023 · Updated Jul 10, 2025
An out-of-bounds read in Win32k in Microsoft Windows 11 21H2 and 22H2 allows local users to elevate privileges. Microsoft identifies the component and weakness but has not published the affected function, attacker-controlled input, or invalid bounds operation. The gate is existing low-privileged local access, after which the attacker gains higher privileges on the affected host.
Summary
What happened
An out-of-bounds read in Win32k in Microsoft Windows 11 21H2 and 22H2 allows local users to elevate privileges. Microsoft identifies the component and weakness but has not published the affected function, attacker-controlled input, or invalid bounds operation. The gate is existing low-privileged local access, after which the attacker gains higher privileges on the affected host.
The record
- CVE
- CVE-2023-24902
- Published
- May 9, 2023
- Updated
- Jul 10, 2025
- Vendor
- Microsoft
- Product
- Windows 11 version 21H2
- Classifications
- CWE-125, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- May 9, 2023CVE publishedPublication date reported by the CVE source.
- Jul 10, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0.0 <10.0.22000.1936
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.
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo