Local privilege escalation via heap buffer overflow
Published Feb 11, 2025 · Updated Feb 13, 2026
A heap-based buffer overflow in Windows Core Messaging allows local users with low privileges to elevate privileges on affected Windows systems. Microsoft identifies the component and weakness class but has not published the specific function or memory operation that overruns a heap allocation. Exploitation requires local access, low privileges, and target-specific preparation; success grants elevated control of the host.
Summary
What happened
A heap-based buffer overflow in Windows Core Messaging allows local users with low privileges to elevate privileges on affected Windows systems. Microsoft identifies the component and weakness class but has not published the specific function or memory operation that overruns a heap allocation. Exploitation requires local access, low privileges, and target-specific preparation; success grants elevated control of the host.
The record
- CVE
- CVE-2025-21184
- Published
- Feb 11, 2025
- Updated
- Feb 13, 2026
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-122, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 11, 2025CVE publishedPublication date reported by the CVE source.
- Feb 13, 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 <10.0.10240.20915
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.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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