Link following in Microsoft Windows and Windows Server - CVE-2025-33075

Vulnerability identifier: #VU110737

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-2025-33075

CWE-ID: CWE-59

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 an insecure link following issue in Windows Installer. A local user can create a specially crafted symbolic link to a critical file on the system and overwrite it with privileges of the application.

Microsoft Windows
Windows Server

Install updates from vendor's website.

Microsoft Windows - addressed in versions 10 21H2 10.0.19044.5965, 10 22H2 10.0.19045.5965, 10 1507 10.0.10240.21034, 10 1607 10.0.14393.8148, 10 1809 10.0.17763.7434, 11 22H2 10.0.22621.5472, 11 23H2 10.0.22631.5472, 11 24H2 10.0.26100.4270, 11 24H2 10.0.26100.4349
Windows Server - addressed in versions 2008 R2 6.1.7601.27769, 2008 6.0.6003.23351, 2012 R2 6.3.9600.22620, 2012 6.2.9200.25522, 2016 10.0.14393.8148, 2019 10.0.17763.7434, 2022 23H2 10.0.25398.1665, 2022 10.0.20348.3745, 2022 10.0.20348.3807, 2025 10.0.26100.4270, 2025 10.0.26100.4349

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-33075
• https://www.zerodayinitiative.com/advisories/ZDI-25-332/

• Multiple vulnerabilities in Microsoft Windows Installer