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CVE-2024-43451: Microsoft Windows NTLMv2 Hash Disclosure Spoofing Vulnerability
Microsoft Windows · in CISA KEV since 2024-11-12
2024-11-12added to KEV
2024-12-03federal remediation due date
84.11%EPSS exploit probability (30 days) 99.7th percentile
6.5 MEDIUMCVSS 3.1
Unknownknown ransomware use
0days from NVD publication to KEV
What it is
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 (CISA)
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
| CWE | CWE-73 |
|---|---|
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
| NVD published | 2024-11-12 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2024-43451.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.