Actively exploited in the wild
Microsoft Windows NTLMv2 Hash Disclosure Spoofing Vulnerability
Microsoft - Windows · Listed in the CISA KEV since 2024-11-12. This indicates confirmed attacks in production environments.
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CVE-2024-43451
MediumCVSS 6.5KEVSummary
NTLM Hash Disclosure Spoofing Vulnerability allows for the disclosure of NTLM hashes. An attacker could exploit this to impersonate a user or system.
Risk Assessment
Disclosure of NTLM hashes could enable an attacker to perform pass-the-hash attacks or other techniques using captured credentials.
Recommendation
Apply Microsoft security updates and enable protections against NTLM hash disclosure if possible.
Other vulnerabilities in Windows NTLM
See all- CVE-2026-20925Medium
External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing over a network.
- CVE-2026-20872Medium
External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing over a network.
- CVE-2025-24054MediumActively exploited
A vulnerability in Windows NTLM allows external control of file name or path. An unauthorized attacker can perform spoofing over a network.
- CVE-2026-83709High
A heap-based buffer overflow in Windows NTLM allows an authorized attacker to elevate privileges locally.
- CVE-2026-50508Medium
A vulnerability in Windows NTLM exposes sensitive information to an unauthorized actor, allowing spoofing over a network.
- CVE-2025-59284Low
Exposure of sensitive information to an unauthorized actor in Windows NTLM allows an unauthorized attacker to perform spoofing locally. The vulnerability affects the NTLM mechanism in Windows.
Original NVD description (English source)
NTLM Hash Disclosure Spoofing Vulnerability
Vulnerability data from NVD (NIST) · CISA KEV · EPSS