CVE-2026-44800 Windows Push Notifications Elevation of Privilege Vulnerability

High 7.8 Published 14 Jul 2026 Updated 28 Oct 2026

A race condition in Windows Push Notifications allows an authorized local attacker to elevate privileges.

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

What is CVE-2026-44800?

CVE-2026-44800 is a high-severity vulnerability in Microsoft Windows 11 23h2, published on 14 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.

Weakness: CWE-416, CWE-362

Which versions are affected by CVE-2026-44800?

It affects 5 products.

Products include Microsoft Windows 11 23h2, Microsoft Windows 11 24h2, Microsoft Windows 11 25h2, Microsoft Windows 11 26h1, Microsoft Windows Server 2025.

How do I fix CVE-2026-44800?

No fix has been published for CVE-2026-44800 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-44800 being exploited?

There is no known exploitation of CVE-2026-44800 in the wild and no public exploit code.

All Microsoft Windows 11 23h2 vulnerabilities

Sources

Also known as GHSA-gr87-xh8q-83qf.