Local privilege escalation via use-after-free
Published Jan 10, 2023 · Updated Jan 1, 2025
Use-after-free in the Microsoft DWM Core Library in affected Windows releases allows local users to elevate privileges. Microsoft classifies the flaw as use-after-free but has not disclosed the freed object's type, affected function, or trigger sequence. Exploitation requires existing low-privilege local access and crosses a privilege boundary, allowing attacker-controlled actions with higher rights.
Summary
What happened
Use-after-free in the Microsoft DWM Core Library in affected Windows releases allows local users to elevate privileges. Microsoft classifies the flaw as use-after-free but has not disclosed the freed object's type, affected function, or trigger sequence. Exploitation requires existing low-privilege local access and crosses a privilege boundary, allowing attacker-controlled actions with higher rights.
The record
- CVE
- CVE-2023-21724
- Published
- Jan 10, 2023
- Updated
- Jan 1, 2025
- Vendor
- Microsoft
- Product
- Windows 11 version 21H2
- Classifications
- CWE-416, 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=10.0.0 <10.0.22000.1455
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.
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Technologies
Your stack
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Your stack
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