Untrusted Pointer Dereference in Microsoft Windows and Windows Server - CVE-2025-55230

Vulnerability identifier: #VU114363

CSH Severity: Low

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-55230

CWE-ID: CWE-822

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to untrusted pointer dereference in Windows MBT Transport driver. A local user can trigger memory corruption and execute arbitrary code with SYSTEM privileges. 

Microsoft Windows
Windows Server

Install update from vendor's website.

Microsoft Windows - addressed in versions 10 21H2 10.0.19044.6321, 10 22H2 10.0.19045.6321, 10 1507 10.0.10240.21122, 10 1607 10.0.14393.8416, 10 1809 10.0.17763.7783, 11 22H2 10.0.22621.5900, 11 23H2 10.0.22631.5900, 11 24H2 10.0.26100.6563
Windows Server - addressed in versions 2008 R2 6.1.7601.27924, 2008 6.0.6003.23524, 2012 R2 6.3.9600.22767, 2012 6.2.9200.25669, 2016 10.0.14393.8416, 2019 10.0.17763.7783, 2022 23H2 10.0.25398.1840, 2022 10.0.20348.4161, 2025 10.0.26100.6563

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-55230

• Privilege escalation in Microsoft Windows MBT Transport driver