Heap-memory disclosure via uninitialized authentication resource
Published Sep 10, 2024 · Updated Aug 10, 2026
Information disclosure in Windows Authentication Methods allows local users with low privileges to read small portions of heap memory. The affected authentication code uses an uninitialized resource, but Microsoft has not identified the function, data structure, or operation that exposes residual heap contents. Exploitation requires local access and low privileges; the bounded result is a read of small heap regions, with no integrity or availability impact reported.
Summary
What happened
Information disclosure in Windows Authentication Methods allows local users with low privileges to read small portions of heap memory. The affected authentication code uses an uninitialized resource, but Microsoft has not identified the function, data structure, or operation that exposes residual heap contents. Exploitation requires local access and low privileges; the bounded result is a read of small heap regions, with no integrity or availability impact reported.
The record
- CVE
- CVE-2024-38254
- Published
- Sep 10, 2024
- Updated
- Aug 10, 2026
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-908
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 10, 2024CVE publishedPublication date reported by the CVE source.
- Aug 10, 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?
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- Affected versionversion=10.0.10240.0 <10.0.10240.20766
What conditions does exploitation require?
What is affected?
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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