CVE-2026-20917 Affecting microcode_ctl package, versions <4:20260812-1.0.2.el10_2


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.11% (2nd percentile)

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  • Snyk IDSNYK-ORACLE10-MICROCODECTL-19531282
  • published4 Sept 2026
  • disclosed11 Aug 2026

Introduced: 11 Aug 2026

CVE-2026-20917  (opens in a new tab)

How to fix?

Upgrade Oracle:10 microcode_ctl to version 4:20260812-1.0.2.el10_2 or higher.
This issue was patched in ELSA-2026-500239.

NVD Description

Note: Versions mentioned in the description apply only to the upstream microcode_ctl package and not the microcode_ctl package as distributed by Oracle. See How to fix? for Oracle:10 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1