CVE-2024-43451: Microsoft Windows NTLMv2 Hash Disclosure Spoofing Vulnerability
Reference page built from the source records below, each shown as its source publishes it. Dataset version ref-858c9f677f7c, updated 2026-11-02T23:39:54.475Z.
CISA Known Exploited Vulnerabilities
- Name
- Microsoft Windows NTLMv2 Hash Disclosure Spoofing Vulnerability
- Vendor
- Microsoft
- Product
- Windows
- Added to the catalog
- 2024-11-12
- Due date for US federal agencies
- 2024-12-03
- Weaknesses
- CWE-73
- Catalog version
- 2026.10.30
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.
Ransomware use: CISA does not mark known use of this vulnerability in ransomware campaigns.
Links in CISA's notes
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43451
- https://nvd.nist.gov/vuln/detail/CVE-2024-43451
Read on 2026-11-02T23:39:54.475Z under licence cisa-kev-cc0@b0067899 from https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json
NVD analysis
- Status
- Analyzed
- Published
- 2024-11-12T18:15:22.483
- Last modified
- 2026-06-17T07:51:04.273
- Weaknesses
- CWE-73, NVD-CWE-noinfo
NTLM Hash Disclosure Spoofing Vulnerability
| Metric | Score | Severity | Vector | Scored by |
|---|---|---|---|---|
| CVSS 3.1 | 6.5 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N | [email protected] (Secondary) |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43451 (Patch, Vendor Advisory)
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-43451 (US Government Resource)
This product uses the NVD API but is not endorsed or certified by the NVD.
Read on 2026-11-02T23:42:15.686Z under licence nvd-api-terms-of-use@ff2a5288 from https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2024-43451
CVE record
- Title (CNA)
- NTLM Hash Disclosure Spoofing Vulnerability
- Assigner
- microsoft
- State
- PUBLISHED
- Published
- 2024-11-12T17:53:48.946Z
- Updated
- 2025-10-21T22:55:37.170Z
- Problem types
- CWE-73: External Control of File Name or Path
References
Read on 2026-11-03T02:07:06.889Z under licence cve-terms-of-use@81bfa2f3 from https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2024/43xxx/CVE-2024-43451.json
Defensive techniques (MITRE D3FEND)
D3FEND maps these defensive techniques to the weakness (CWE) that NVD lists for this CVE, through the digital artifacts the weakness affects. D3FEND does not say they stop this vulnerability.
CWE-73: External Control of File Name or Path
D3FEND lists no defensive technique for this weakness.
D3FEND ontology version 1.6.0.
Read on 2026-11-02T23:54:11.867Z under licence d3fend-terms-of-use@f98cbc7e from https://d3fend.mitre.org/api/weakness/cwe/CWE-73.json
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"The MITRE Corporation (MITRE) hereby grants you a non-exclusive, royalty-free license to use D3FEND for research, development, and commercial purposes. Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." Terms: https://d3fend.mitre.org/tou/
Sources and licences
CISA
Source: CISA Catalog of Known Exploited Vulnerabilities, version 2026.10.30, CC0 1.0. Use of this data does not imply endorsement by CISA or DHS.
National Vulnerability Database (NIST)
This product uses the NVD API but is not endorsed or certified by the NVD.
NVD API Terms of Use (NIST publications in the public domain, 17 U.S.C. 105)
CVE Program, The MITRE Corporation
Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation. CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.
MITRE D3FEND
MITRE D3FEND™ knowledge graph. © 2025 The MITRE Corporation.
"The MITRE Corporation (MITRE) hereby grants you a non-exclusive, royalty-free license to use D3FEND for research, development, and commercial purposes. Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." Terms: https://d3fend.mitre.org/tou/MITRE D3FEND Terms of Use (site + knowledge graph); source repo MIT
Cite this page
Dragons Eye Ransomware Tracker, "CVE-2024-43451: Microsoft Windows NTLMv2 Hash Disclosure Spoofing Vulnerability",
entity page, dataset version ref-858c9f677f7c, updated 2026-11-02T23:39:54.475Z,
https://ransomware-tracker.com/cve/CVE-2024-43451 (accessed 2026-11-03).
Underlying source: CISA Catalog of Known Exploited Vulnerabilities, version 2026.10.30.
Underlying source: National Vulnerability Database (NIST), CVE API 2.0, record last modified 2026-06-17T07:51:04.273.
Underlying source: CVE List (CVE Program, The MITRE Corporation), record updated 2025-10-21T22:55:37.170Z.
Underlying source: MITRE D3FEND, ontology version 1.6.0.
Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.