What is CVE-2026-68821?

CVE-2026-68821 is a high-severity vulnerability in Microsoft App Installer, classified under Improper Privilege Management. CVSS score: 7.3/10. Published 2026-08-11.

How severe is CVE-2026-68821?

High severity. CVSS v3 base score is 7.3 out of 10.

Privilege escalation in Microsoft App Installer

CVE-2026-68821

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

Vulnerability class: Privilege Escalation

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.

Affected products

Microsoft App Installer — versions 1.0.0.0

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

Windows Package Manager Elevation of Privilege Vulnerability (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-68821?: CVE-2026-68821 is a high-severity vulnerability in Microsoft App Installer, classified under Improper Privilege Management. CVSS score: 7.3/10. Published 2026-08-11.
How severe is CVE-2026-68821?: High severity. CVSS v3 base score is 7.3 out of 10.