Information disclosure in Microsoft products - CVE-2024-43451

Vulnerability identifier: #VU100276

CSH Severity: High

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2024-43451

CWE-ID: CWE-200

Exploitation vector: Remote access

Exploit availability: The vulnerability is being exploited in the wild

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to disclosure of a user's NTLMv2 hash. A remote attacker can trick the victim into visiting a specially crafted website and obtain their NTLMv2 hash.

Note, the vulnerability is being actively exploited in the wild.

Microsoft Internet Explorer
Microsoft Windows
Windows Server

Install updates from vendor's website.

Microsoft Windows - addressed in versions 10 21H2 10.0.19044.5131, 10 22H2 10.0.19045.5131, 10 1507 10.0.10240.20826, 10 1607 10.0.14393.7515, 10 1809 10.0.17763.6532, 11 22H2 10.0.22621.4460, 11 23H2 10.0.22631.4460, 11 24H2 10.0.26100.2240, 11 24H2 10.0.26100.2314
Windows Server - addressed in versions 2008 R2 6.1.7601.27415, 2008 6.0.6003.22966, 2012 R2 6.3.9600.22267, 2012 6.2.9200.25165, 2022 23H2 10.0.25398.1251, 2022 10.0.20348.2849, 2025 10.0.26100.2240, 2025 10.0.26100.2314

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2024-43451

• NTLMv2 hash disclosure in Microsoft Windows MSHTML component