Microsoft Windows NTLMv2 Hash Disclosure Spoofing Vulnerability
Microsoft — Windows Server 2025
NTLM Hash Disclosure Spoofing Vulnerability
6.5
84.1%
Vector breakdown
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:F/RL:O/RC:C
- Published
- Nov 12, 2024
- Modified
- Oct 21, 2025
- Added to KEV
- Nov 12, 2024
- Federal patch due
- Dec 3, 2024
CISA required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Weakness classification
Proof-of-concept & exploitation references
Weaponization
Public repositories whose name or description references CVE-2024-43451, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit — cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
No public GitHub repositories referencing CVE-2024-43451 were found at last check. Absence here is not proof no exploit exists — see the references below for vendor advisories and write-ups.
References
Frequently asked questions
What is CVE-2024-43451?
NTLM Hash Disclosure Spoofing Vulnerability
How severe is CVE-2024-43451?
CVE-2024-43451 has a CVSS base score of 6.5 out of 10 (CVSS 3.1).
Is CVE-2024-43451 actively exploited in the wild?
Yes. CVE-2024-43451 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Nov 12, 2024, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2024-43451?
84.1% - meaning FIRST.org's EPSS model estimates a 84.1% probability this vulnerability will be exploited in the wild within 30 days (100% percentile among all scored CVEs).
What type of vulnerability is CVE-2024-43451?
CVE-2024-43451 is classified under CWE-73 (CWE-73: External Control of File Name or Path).
Cross-checked against
Impactr finds and proves whether CVE-2024-43451 — or flaws like it — are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.