Input validation error in Microsoft Windows and Windows Server - CVE-2024-20659

Vulnerability identifier: #VU98197

CSH Severity: Low

CVSS v4: 7.3 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2024-20659

CWE-ID: CWE-20

Exploitation vector: Adjecent network

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to insufficient validation of user-supplied input in Windows Hyper-V. A remote attacker on the local network can bypass the UEFI, leading to the compromise of the hypervisor and the secure kernel.

Microsoft Windows
Windows Server

Install updates from vendor's website.

Microsoft Windows - addressed in versions 10 21H2 10.0.19044.5011, 10 22H2 10.0.19045.5011, 10 1607 10.0.14393.7428, 10 1809 10.0.17763.6414, 11 21H2 10.0.22000.3260, 11 22H2 10.0.22621.4317, 11 23H2 10.0.22631.4317, 11 24H2 10.0.26100.2033
Windows Server - addressed in versions 2012 R2 6.3.9600.22221, 2022 23H2 10.0.25398.1189, 2022 10.0.20348.2762

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2024-20659

• Multiple vulnerabilities in Microsoft Windows Hyper-V