CVE-2026-50508
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Windows NTLM Information Disclosure and Spoofing Vulnerability

Publication date: 2026-06-09

Last updated on: 2026-06-09

Assigner: Microsoft Corporation

Description
Exposure of sensitive information to an unauthorized actor in Windows NTLM allows an unauthorized attacker to perform spoofing over a network.

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Meta Information

Published
2026-06-09
Last Modified
2026-06-09
Generated
2026-06-30
AI Q&A
2026-06-09
EPSS Evaluated
2026-06-28
NVD
CVE-2026-50508
EUVD
EUVD-2026-35529

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
microsoft windows_ntlm *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-200 The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

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Executive Summary

This vulnerability involves the exposure of sensitive information to an unauthorized actor within the Windows NTLM authentication protocol. It allows an unauthorized attacker to perform spoofing attacks over a network.

Impact Analysis

The vulnerability can impact you by enabling an attacker to spoof identities over a network, potentially gaining unauthorized access or impersonating legitimate users. This can lead to exposure of sensitive information.

Compliance Impact

The vulnerability involves exposure of sensitive information to unauthorized actors through Windows NTLM, enabling network spoofing attacks.

Such exposure of sensitive information could potentially lead to non-compliance with data protection regulations like GDPR and HIPAA, which require safeguarding sensitive data against unauthorized access.

However, the provided information does not explicitly state the impact on compliance with these standards.

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