CVE-2023-21725: Windows Malicious Software Removal Tool Elevation of Privilege Vulnerability

Severity: medium (CVSS 6.3 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: 2023-01-10 · updated 2026-06-17
Weakness: CWE-59

Description

Windows Malicious Software Removal Tool Elevation of Privilege Vulnerability

Affected products

Microsoft Windows Malicious Software Removal Tool: before 5.109 — fixed in 5.109
Microsoft Windows Malicious Software Removal Tool: from 5.0.0 before 5.109.19957.1 — fixed in 5.109.19957.1

How to fix

Upgrade to a fixed version: Microsoft Windows Malicious Software Removal Tool 5.109; Microsoft Windows Malicious Software Removal Tool 5.109.19957.1. Check the vendor advisory for mitigations.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21725
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21725

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