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Microsoft Windows NTLMv2 Hash Disclosure Spoofing Vulnerability

Microsoft Windows contains an NTLMv2 hash spoofing vulnerability that could result in disclosing a user& x27;s NTLMv2 hash to an attacker via a file open o

Security · HIGH
Source: CISA Known Exploited VulnerabilitiesMay 2, 2026, 4:51 PMSecurityhigh

Full content

Microsoft Windows contains an NTLMv2 hash spoofing vulnerability that could result in disclosing a user's NTLMv2 hash to an attacker via a file open operation. The attacker could then leverage this hash to impersonate that user.

Vendor: Microsoft

Product: Windows

Due date: 2024-12-03

Known ransomware use: Unknown

Why it matters

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

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