CVE-2026-68821 Windows Package Manager Elevation of Privilege Vulnerability

High 7.3 Published 11 Aug 2026 Updated 28 Oct 2026

An authorized local attacker can exploit improper privilege management in Windows Package Manager to elevate privileges.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-68821?

CVE-2026-68821 is a high-severity vulnerability in Microsoft App Installer, published on 11 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

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

Weakness: CWE-269

Which versions are affected by CVE-2026-68821?

It affects 1 product.

Products include Microsoft App Installer.

How do I fix CVE-2026-68821?

No fix has been published for CVE-2026-68821 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-68821 being exploited?

There is no known exploitation of CVE-2026-68821 in the wild and no public exploit code.

Sources

Also known as GHSA-j4h5-8p8v-mfj6.