CVE-2026-20778 Denial of service in Intel(R) PROSet/Wireless WiFi Software for Windows

High 7.0 Published 11 Aug 2026 Updated 12 Aug 2026

An out-of-bounds read in Intel WiFi drivers allows unprivileged attackers to cause a denial of service via adjacent network access.

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-2026-20778?

CVE-2026-20778 is a high-severity denial of service 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

Out-of-bounds read for some Intel(R) PROSet/Wireless WiFi Software for Windows within Ring 0: Kernel may allow a denial of service. Unprivileged software adversary with an unauthenticated user combined with a high complexity attack may enable denial of service. This result may potentially occur via adjacent access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (high) impacts.

Weakness: CWE-125

Which versions are affected by CVE-2026-20778?

It affects 1 product.

Products include Intel Proset\/Wireless Wifi.

How do I fix CVE-2026-20778?

No fix has been published for CVE-2026-20778 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2026-20778 being exploited?

There is no known exploitation of CVE-2026-20778 in the wild and no public exploit code.

All Intel Proset\/Wireless Wifi vulnerabilities

Sources

Also known as GHSA-qjfv-9jh8-hhgm.