What’s Vulnerable › Vulnerabilities

CVE-2026-42902: Microsoft PowerToys Elevation of Privilege Vulnerability

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-09 · updated 2026-09-24
• Weakness: CWE-285

Description

Improper authorization in Microsoft PowerToys allows an authorized attacker to elevate privileges locally.

Affected products

• Microsoft PowerToys: before 0.99.1 — fixed in 0.99.1
• Microsoft PowerToys: from 0.1 before v0.99.1 — fixed in v0.99.1

How to fix

Upgrade to a fixed version: Microsoft PowerToys 0.99.1; Microsoft PowerToys v0.99.1. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42902

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