CVE-2025-31938 Information disclosure in Intel(R) Xeon(R) 6 Scalable processors with Intel(R) TDX may allow an information disclosure. Authorized adversary with an authenticated user combined with a high complexity attack may enable data exposure. This result may potentially occur via local access when attack requirements are present with special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (none) and availability (none) impacts.
An authorized local attacker with high complexity can exploit insufficient access control in Intel Xeon TDX to disclose sensitive data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-31938?
CVE-2025-31938 is a medium-severity vulnerability in Intel(R) Xeon(R) 6 Scalable processors with Intel(R) TDX may allow an information disclosure. Authorized adversary with an authenticated user combined with a high complexity attack may enable data exposure. This result may potentially occur via local access when attack requirements are present with special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (none) and availability (none) impacts., 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
Insufficient granularity of access control in some subsystem for some Intel(R) Xeon(R) 6 Scalable processors with Intel(R) TDX may allow an information disclosure. Authorized adversary with an authenticated user combined with a high complexity attack may enable data exposure. This result may potentially occur via local access when attack requirements are present with special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (none) and availability (none) impacts.
Weakness: CWE-1220
Which versions are affected by CVE-2025-31938?
How do I fix CVE-2025-31938?
Apply the vendor's patch.
Is CVE-2025-31938 being exploited?
There is no known exploitation of CVE-2025-31938 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2025-31938, DEBIAN-CVE-2025-31938, GHSA-c68w-56q5-h83x, UBUNTU-CVE-2025-31938.