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MSRC compact vulnerability detail

CVE-2026-21517 · Windows App for Mac Installer Elevation of Privilege Vulnerability

Improper link resolution before file access ('link following') in Windows App for Mac allows an authorized attacker to elevate privileges locally.

Severity
Important
Impact
Elevation of Privilege
CVSS
4.7 base · 4.1 temporal
Release
2026-02-10
Signals
Windows App for Mac Elevation of Privilege Exploited: No Publicly disclosed: No Exploitability: Exploitation Less Likely
CWE
CWE-59: Improper Link Resolution Before File Access ('Link Following')
Patch Diff
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Resolved binary override
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Description
Improper link resolution before file access ('link following') in Windows App for Mac allows an authorized attacker to elevate privileges locally.
FAQ / Articles
Windows App for Mac Elevation of Privilege Vulnerability
Improper link resolution before file access ('link following') in Windows App for Mac allows an authorized attacker to elevate privileges locally.
FAQ
According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability? Successful exploitation of this vulnerability requires an attacker to carefully time their actions to exploit the timing differences in the execution of specific operations.