What’s Vulnerable › Vulnerabilities

CVE-2025-55317: Microsoft AutoUpdate (MAU) Elevation of Privilege Vulnerability

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-09-09 · updated 2026-06-17
• Weakness: CWE-59

Description

Improper link resolution before file access ('link following') in Microsoft AutoUpdate (MAU) allows an authorized attacker to elevate privileges locally.

Affected products

• Microsoft AutoUpdate for Mac: before 4.80 — fixed in 4.80
• Microsoft AutoUpdate for Mac: from 4.0.0 before 4.80 — fixed in 4.80

How to fix

Upgrade to a fixed version: Microsoft AutoUpdate for Mac 4.80; Microsoft AutoUpdate for Mac 4.80. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55317

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