CVE-2026-20707: intel-microcode Hardware Logic Contains Race Conditions

Vulnerability summary

CVE-2026-20707 is a medium (CVSS 6.8) Hardware Logic Contains Race Conditions vulnerability in intel-microcode. EPSS estimates a 0.08% chance of exploitation in the next 30 days, higher than 0.1% of scored vulnerabilities.

Timeline

1. 11-08-2026
   PublishedVulnerability first disclosed.
2. 12-08-2026
   Last modifiedVulnerability information updated.

Description

Hardware logic contains race conditions for some 3rd Gen Intel(R) Xeon(R) Scalable Processors within Ring 3: unprivileged software may allow a denial of service. Unprivileged software adversary with an authenticated user combined with a high complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present with 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.

• CWE-1298Hardware Logic Contains Race ConditionsA race condition in the hardware logic results in undermining security guarantees of the system.