Main Vulnerability Database Vulnerabilities #VU164660

Link following in Microsoft Windows and Windows Server - CVE-2026-105532

Published: November 10, 2026

Vulnerability identifier: #VU164660

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-2026-105532

CWE-ID: CWE-59

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to escalate privileges locally.

The vulnerability exists due to improper link resolution before file access in Windows Installer when performing installation or repair operations. A local user can exploit link following to cause Windows Installer to write to a protected location using its SYSTEM permissions.

The write is constrained by the affected installation or repair operation.

Affected software

Microsoft Windows
Windows Server

How to mitigate CVE-2026-105532

Install security update from vendor's website.

Microsoft Windows - addressed in versions 10 21H2 10.0.19044.7846, 10 22H2 10.0.19045.7846, 10 1607 10.0.14393.9688, 10 1809 10.0.17763.9487, 11 23H2 10.0.22631.7711, 11 24H2 10.0.26100.9911, 11 24H2 10.0.26100.9974, 11 25H2 10.0.26200.9911, 11 25H2 10.0.26200.9974, 11 26H1 10.0.28000.3501
Windows Server - addressed in versions 2016 10.0.14393.9688, 2019 10.0.17763.9487, 2022 10.0.20348.5870, 2025 10.0.26100.33730, 2025 10.0.26100.33822

External References

Related Security Bulletins