CVE-2026-20891 Auth bypass in Intel(R) PROSet/Wireless WiFi Software for Windows

Medium 6.3 Published 11 Aug 2026 Updated 12 Aug 2026

An unprivileged local attacker can bypass authentication in Intel WiFi drivers to escalate privileges and execute code on Windows systems.

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

What is CVE-2026-20891?

CVE-2026-20891 is a medium-severity authentication bypass vulnerability in Intel Proset\/Wireless Wifi, published on 11 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Improper authentication for some Intel(R) PROSet/Wireless WiFi Software for Windows within Ring 2: Device Drivers may allow an escalation of privilege. Unprivileged software adversary with an unauthenticated user combined with a low complexity attack may enable local code execution. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (low), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (low) and availability (low) impacts.

Weakness: CWE-287

Which versions are affected by CVE-2026-20891?

It affects 1 product.

Products include Intel Proset\/Wireless Wifi.

How do I fix CVE-2026-20891?

No fix has been published for CVE-2026-20891 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2026-20891 being exploited?

There is no known exploitation of CVE-2026-20891 in the wild and no public exploit code.

All Intel Proset\/Wireless Wifi vulnerabilities

Sources

Also known as GHSA-mrpv-4pwm-jv3g.