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TI-2025-21209 Aliases CVE-2025-29801GHSA-hgp6-f396-gg6v

Microsoft AutoUpdate (MAU) Elevation of Privilege Vulnerability

Priority LOW 38CWE-276Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from Microsoft.

Summary

Incorrect default permissions in Microsoft AutoUpdate (MAU) allows an authorized attacker to elevate privileges locally.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01086 65th percentileScored 2026-11-07
Fix Fixed Microsoft AutoUpdate for Mac (Microsoft): 4.78

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftMicrosoft AutoUpdate for Mac4.0.0 to before 4.784.78Patch availableCNA
  • Microsoft AutoUpdate for Mac VendorMicrosoft Affected 4.0.0 to before 4.78 Fixed in 4.78 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:autoupdate:*:*:*:*:*:macos:*:*before 4.78VulnerableMicrosoft
  • cpe:2.3:a:microsoft:autoupdate:*:*:*:*:*:macos:*:* Versions before 4.78 Vulnerable ·Microsoft

Remediation

  • Fix · CNA Microsoft AutoUpdate for Mac (Microsoft) Fixed in 4.78

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Elevation of Privilege
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely
ProductStatusPlan or fix
Microsoft AutoUpdate for MacFixed 4.78 · Security Update

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-29801
  2. 2026-10-03 Alias added: GHSA-hgp6-f396-gg6v

References

Patch 1

  • TI-2025-21208 Microsoft AutoUpdate (MAU) Elevation of Privilege Vulnerability CVSS 3.1HIGH 7.8
  • TI-2024-29132 Microsoft AutoUpdate (MAU) Elevation of Privilege Vulnerability CVSS 3.1HIGH 7.8
  • TI-2025-34972 Microsoft AutoUpdate (MAU) Elevation of Privilege Vulnerability CVSS 3.1HIGH 7.8
  • TI-2025-30357 Microsoft AutoUpdate (MAU) Elevation of Privilege Vulnerability CVSS 3.1HIGH 7.8
  • TI-2025-15327 Microsoft AutoUpdate (MAU) Elevation of Privilege Vulnerability CVSS 3.1HIGH 7.8
  • TI-2020-00954 Improper input validation in Microsoft AutoUpdate for Mac CVSS 3.1HIGH 7.8
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences