What is CVE-2026-21517?

CVE-2026-21517 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Windows App for Mac Installer Elevation of Privilege Vulnerability

Which CVE IDs does CVE-2026-21517 cover?

CVE-2026-21517 covers the following CVE IDs: CVE-2026-21517. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-21517?

CVE-2026-21517 has a CVSS v3 base score of 4.7, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-21517?

CVE-2026-21517 affects 1 product, including: Windows App for Mac.

CVE-2026-21517HighCVSS 4.7

Windows App for Mac Installer Elevation of Privilege Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

February 10, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-21517 →

📋 Description

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

🎯 Affected products1

Windows App for Mac

✅ Remediation

Security Update — fixed build 11.3.2

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21517
referencehttps://go.microsoft.com/fwlink/?linkid=868963