CVE-2026-20775 Denial of service in Intel(R) TDX modules

Medium 6.8 Published 11 Aug 2026 Updated 12 Aug 2026

A privileged local attacker can cause a denial of service in Intel TDX modules via an uncaught exception in Ring 0.

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

What is CVE-2026-20775?

CVE-2026-20775 is a medium-severity denial of service vulnerability in Intel(R) TDX modules, 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

Uncaught exception for some Intel(R) TDX modules within Ring 0: Trust Domain may allow a denial of service. System software adversary with a privileged user combined with a high complexity attack may enable denial of service. This result may potentially occur via local 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-248

Which versions are affected by CVE-2026-20775?

It affects 1 product.

Products include Intel Tdx Module.

How do I fix CVE-2026-20775?

No fix has been published for CVE-2026-20775 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-2026-20775 being exploited?

There is no known exploitation of CVE-2026-20775 in the wild and no public exploit code.

Sources

Also known as GHSA-5j5j-vmr5-mmmh.