NTLM authentication data disclosure enabling spoofing
Published Jun 9, 2026 · Updated Jun 9, 2026
Information disclosure in Windows NTLM allows remote attackers to obtain sensitive authentication data for network spoofing. Microsoft has not published the vulnerable NTLM component or the operation that exposes the authentication data. Exploitation requires user interaction; the disclosed data affects confidentiality and can support spoofing over a network.
Summary
What happened
Information disclosure in Windows NTLM allows remote attackers to obtain sensitive authentication data for network spoofing. Microsoft has not published the vulnerable NTLM component or the operation that exposes the authentication data. Exploitation requires user interaction; the disclosed data affects confidentiality and can support spoofing over a network.
The record
- CVE
- CVE-2026-50508
- Published
- Jun 9, 2026
- Updated
- Jun 9, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2016 (Server Core installation)
- Classifications
- CWE-200
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 9, 2026CVE publishedPublication date reported by the CVE source.
- Jun 9, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0.14393.0 <10.0.14393.9234
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
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo