What’s Vulnerable › Vulnerabilities

CVE-2026-68821: Windows Package Manager 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: 2026-08-11 · updated 2026-10-30
• Weakness: CWE-269

Description

Improper privilege management in Windows Package Manager allows an authorized attacker to elevate privileges locally.

Affected products

• Microsoft App Installer: before 1.29.280 — fixed in 1.29.280
• Microsoft App Installer: from 1.0.0.0 before 1.29.279 — fixed in 1.29.279

How to fix

Upgrade to a fixed version: Microsoft App Installer 1.29.280; Microsoft App Installer 1.29.279. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68821

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