CVE-2026-26178 Windows Advanced Rasterization Platform Elevation of Privilege Vulnerability

High 8.8 Published Updated

An integer truncation flaw in Windows Advanced Rasterization Platform allows local attackers to elevate privileges.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2026-26178?

CVE-2026-26178 is a high-severity vulnerability in Microsoft Windows 10 1607, published on 14 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Integer size truncation in Windows Advanced Rasterization Platform (WARP) allows an unauthorized attacker to elevate privileges locally.

Weakness: CWE-681, CWE-190

Which versions are affected by CVE-2026-26178?

It affects 12 products.

Products include Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows 11 23h2, Microsoft Windows 11 24h2 and 6 more.

How do I fix CVE-2026-26178?

No fix has been published for CVE-2026-26178 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-26178 being exploited?

There is no known exploitation of CVE-2026-26178 in the wild and no public exploit code.

All Microsoft Windows 10 1607 vulnerabilities

Sources

Also known as GHSA-whvh-93vh-g249.

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