Link following in Windows App for Mac - CVE-2026-21517

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Main Vulnerability Database Vulnerabilities #VU122565

Link following in Windows App for Mac - CVE-2026-21517

Published: February 10, 2026


Vulnerability identifier: #VU122565
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-21517
CWE-ID: CWE-59
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Microsoft
Affected software:
Windows App for Mac

Detailed vulnerability description

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

The vulnerability exists due to an insecure link following issue in Windows App for Mac 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.


How to mitigate CVE-2026-21517

Install updates from vendor's website.

Sources