Local privilege escalation via heap buffer overflow
Published Dec 9, 2025 · Updated Apr 16, 2026
Heap-based buffer overflow in the Windows DWM Core Library allows local users to elevate privileges on affected Windows systems. Microsoft has not disclosed the affected routine, the attacker-controlled input, or the incorrect memory operation beyond the heap overflow class. Exploitation requires existing low-privilege local access, and Microsoft has not specified the resulting privilege level.
Summary
What happened
Heap-based buffer overflow in the Windows DWM Core Library allows local users to elevate privileges on affected Windows systems. Microsoft has not disclosed the affected routine, the attacker-controlled input, or the incorrect memory operation beyond the heap overflow class. Exploitation requires existing low-privilege local access, and Microsoft has not specified the resulting privilege level.
The record
- CVE
- CVE-2025-64679
- Published
- Dec 9, 2025
- Updated
- Apr 16, 2026
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-122, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 9, 2025CVE publishedPublication date reported by the CVE source.
- Apr 16, 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 <10.0.10240.21161
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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