Authenticated code execution via relative path traversal
Published Jul 14, 2026 · Updated Jul 14, 2026
Relative path traversal in Microsoft DNS Server allows remote authenticated users to execute code over an adjacent network. Microsoft identifies relative path traversal but does not disclose the request handler, path field, or file operation that accepts the crafted path. Exploitation requires high privileges and adjacent-network access and grants code execution in the DNS Server context.
Summary
What happened
Relative path traversal in Microsoft DNS Server allows remote authenticated users to execute code over an adjacent network. Microsoft identifies relative path traversal but does not disclose the request handler, path field, or file operation that accepts the crafted path. Exploitation requires high privileges and adjacent-network access and grants code execution in the DNS Server context.
The record
- CVE
- CVE-2026-50426
- Published
- Jul 14, 2026
- Updated
- Jul 14, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-23, T1210
- Attack vector
- adjacent
- Privileges
- admin
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.
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Technologies
Your stack
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Your stack
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