CVEvulnerability

CVE-2024-43451

6.5 MEDIUM Known exploited Published 2024-11-12 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

Microsoft Windows NTLMv2 Hash Disclosure Spoofing Vulnerability — Microsoft Windows

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.

Added to KEV: 2024-11-12
Remediation due: 2024-12-03
Ransomware use: Unknown
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

Status: Analyzed
Published: 2024-11-12
Last modified: 2026-06-17
Assigner: [email protected]
CVSS 3.1 ([email protected]): 6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weaknesses: CWE-73

Description

NTLM Hash Disclosure Spoofing Vulnerability

Affected configurations

• microsoft windows 10 1507 (< 10.0.10240.20826) • microsoft windows 10 1607 (< 10.0.14393.7515) • microsoft windows 10 1809 (< 10.0.17763.6532) • microsoft windows 10 21h2 (< 10.0.19044.5131) • microsoft windows 10 22h2 (< 10.0.19045.5131) • microsoft windows 11 22h2 (< 10.0.22621.4460) • microsoft windows 11 23h2 (< 10.0.22631.4460) • microsoft windows 11 24h2 (< 10.0.26100.2314) • microsoft windows server 2008 • microsoft windows server 2008 r2 • microsoft windows server 2012 • microsoft windows server 2012 r2 • microsoft windows server 2016 (< 10.0.14393.7515) • microsoft windows server 2019 (< 10.0.17763.6532) • microsoft windows server 2022 (< 10.0.20348.2849) • microsoft windows server 2022 23h2 (< 10.0.25398.1251) • microsoft windows server 2025 (< 10.0.26100.2314)

Weakness · CWE (1)

CWE-73 External Control of File Name or Path weakness

References