Local code execution via heap buffer overflow
Published Jul 14, 2026 · Updated Jul 14, 2026
Heap-based buffer overflow in Windows NTFS allows local users to execute code by convincing another user to process crafted data. Microsoft has not published the affected NTFS code path or the operation that overruns a heap buffer. Exploitation requires local access and user interaction; successful exploitation executes code in the affected user's context.
Summary
What happened
Heap-based buffer overflow in Windows NTFS allows local users to execute code by convincing another user to process crafted data. Microsoft has not published the affected NTFS code path or the operation that overruns a heap buffer. Exploitation requires local access and user interaction; successful exploitation executes code in the affected user's context.
The record
- CVE
- CVE-2026-50448
- Published
- Jul 14, 2026
- Updated
- Jul 14, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-122, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 14, 2026CVE publishedPublication date reported by the CVE source.
- Jul 14, 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=10.0.17763.0 <10.0.17763.9020
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
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Your stack
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