Local privilege escalation via NTFS race condition
Published Jul 14, 2026 · Updated Jul 14, 2026
Race condition in Windows NTFS in affected Windows releases allows local users to elevate privileges on the compromised system. Microsoft identifies unsynchronized concurrent access to a shared NTFS resource but does not disclose the affected function, resource, or corrupting operation. Low-privileged local access is required; successful exploitation grants elevated control within the affected operating-system security boundary.
Summary
What happened
Race condition in Windows NTFS in affected Windows releases allows local users to elevate privileges on the compromised system. Microsoft identifies unsynchronized concurrent access to a shared NTFS resource but does not disclose the affected function, resource, or corrupting operation. Low-privileged local access is required; successful exploitation grants elevated control within the affected operating-system security boundary.
The record
- CVE
- CVE-2026-50667
- Published
- Jul 14, 2026
- Updated
- Jul 14, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-362, T1068
- Attack vector
- local
- Privileges
- authenticated
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.
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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