Local Zero Trust DNS enforcement bypass
Published Jul 14, 2026 · Updated Jul 14, 2026
Improper privilege management in Microsoft Windows DNS allows local users to bypass Zero Trust DNS enforcement on affected Windows builds. Microsoft has not disclosed the affected function or the incorrect privilege operation performed when Windows DNS handles the local action. Exploitation requires low-privilege local access; the demonstrated consequence is modification of security-policy enforcement, with no confidentiality or availability impact.
Summary
What happened
Improper privilege management in Microsoft Windows DNS allows local users to bypass Zero Trust DNS enforcement on affected Windows builds. Microsoft has not disclosed the affected function or the incorrect privilege operation performed when Windows DNS handles the local action. Exploitation requires low-privilege local access; the demonstrated consequence is modification of security-policy enforcement, with no confidentiality or availability impact.
The record
- CVE
- CVE-2026-50295
- Published
- Jul 14, 2026
- Updated
- Jul 14, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2025 (Server Core installation)
- Classifications
- CWE-269, T1562.001
- 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=10.0.26100.0 <10.0.26100.33158
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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