CVE-2026-20885 Auth bypass in Intel(R) platforms

High 7.0 Published 11 Aug 2026 Updated 12 Aug 2026

A local privileged attacker can bypass authentication in the Intel TDX module to disclose information and escalate privileges.

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-2026-20885?

CVE-2026-20885 is a high-severity authentication bypass vulnerability in Intel(R) platforms, 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 in the Intel(R) TDX module for some Intel(R) platforms within Ring 0: Trust Domain may allow an information disclosure and escalation of privilege. System software adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. 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 (high), integrity (high) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (low), integrity (low) and availability (none) impacts.

Weakness: CWE-287

Which versions are affected by CVE-2026-20885?

It affects 1 product.

Products include Intel Tdx Module.

How do I fix CVE-2026-20885?

No fix has been published for CVE-2026-20885 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-2026-20885 being exploited?

There is no known exploitation of CVE-2026-20885 in the wild and no public exploit code.

Sources

Also known as GHSA-9cwm-qgv5-93vq.