CVE-2024-43451—Microsoft Windows NTLMv2 Hash Disclosure Spoofing Vulnerability

Vulnerability Name

Microsoft Windows NTLMv2 Hash Disclosure Spoofing Vulnerability

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.

Known To Be Used in Ransomware Campaigns?

Ransomware Status:

Unknown

Action

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

Additional Notes

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

Related News Articles

• Blind Eagle Uses Proton66 Hosting for Phishing, RAT Deployment on Colombian BanksJune 30, 2025
• CVE-2025-24054 Under Active Attack—Steals NTLM Credentials on File DownloadApril 18, 2025
• Windows NTLM vulnerability exploited in multiple attack campaigns (CVE-2025-24054)April 17, 2025
• Blind Eagle Hacks Colombian Institutions Using NTLM Flaw, RATs and GitHub-Based AttacksMarch 11, 2025
• How a Windows zero-day was exploited in the wild for months (CVE-2024-43451)November 14, 2024

Related Weaknesses

• CWE-73