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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.003 (22.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 22.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.001
Affected products
- Microsoft App Installer — versions 1.0.0.0
- Microsoft App Installer
Weakness classification (CWE)
References
- Windows Package Manager Elevation of Privilege Vulnerability (vendor-advisory, Patch, patch, Vendor Advisory)
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.