CVE Watch—

CVE-2024-43451

Microsoft Windows NTLMv2 Hash Disclosure Spoofing Vulnerability

CVSS

—

No CVSS

EPSS

81.8%

p100

KEV

YES

Nov 12, 2024

Exploit Today

0-100

Published: — · Last modified: —

EPSS · 30d

81.8%EPSS · 30 days81.8%

2026-06-302026-07-16

KEV catalog record

Product

Microsoft / Windows

Vulnerability

Microsoft Windows NTLMv2 Hash Disclosure Spoofing Vulnerability

Added to KEV

Nov 12, 2024

Remediate by

Dec 3, 2024

Known ransomware use

Summary description

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.

Required action

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

Notes

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43451 ; https://nvd.nist.gov/vuln/detail/CVE-2024-43451

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

CVE-2025-59287—

100.0%

KEV—80Microsoft Windows Server Update Service (WSUS) Deserialization of Untrusted Data Vulnerability—CVE-2021-34527—

100.0%

KEV—80Microsoft Windows Print Spooler Remote Code Execution Vulnerability—CVE-2008-4250—

99.9%

KEV—80Microsoft Windows Buffer Overflow Vulnerability—CVE-2023-36884—

99.9%

KEV—80Microsoft Windows Search Remote Code Execution Vulnerability—CVE-2022-30190—

99.9%

KEV—80Microsoft Windows Support Diagnostic Tool (MSDT) Remote Code Execution Vulnerability—CVE-2024-21412—

99.9%

KEV—80Microsoft Windows Internet Shortcut Files Security Feature Bypass Vulnerability—