CVE-2026-20917 Information disclosure in Intel(R) Processors
Privileged local attackers can exploit transient execution flaws in Intel processors to disclose sensitive kernel or hypervisor data.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-20917?
CVE-2026-20917 is a medium-severity vulnerability in Intel(R) Processors, 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
Exposure of sensitive information caused by incorrect data forwarding during transient execution for some Intel(R) Processors within Ring 0: Hypervisor and Kernel may allow information disclosure. System software adversary with a privileged user combined with a high complexity attack may enable data exposure. 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 (none), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (none) and availability (none) impacts.
Weakness: CWE-1422
Which versions are affected by CVE-2026-20917?
How do I fix CVE-2026-20917?
Apply the vendor's patch.
Is CVE-2026-20917 being exploited?
There is no known exploitation of CVE-2026-20917 in the wild and no public exploit code.
Sources
Also known as ALPINE-CVE-2026-20917, BELL-CVE-2026-20917, DEBIAN-CVE-2026-20917, GHSA-wf2w-hc7r-v7p4, UBUNTU-CVE-2026-20917.