Inclusion of Functionality from Untrusted Control Sphere Affecting microcode_ctl package, versions *


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.14% (4th percentile)

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  • Snyk IDSNYK-CENTOS8-MICROCODECTL-17337264
  • published14 Jun 2026
  • disclosed15 May 2026

Introduced: 15 May 2026

CVE-2026-0438  (opens in a new tab)
CWE-829  (opens in a new tab)

How to fix?

There is no fixed version for Centos:8 microcode_ctl.

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 Centos. See How to fix? for Centos:8 relevant fixed versions and status.

A System Management Mode (SMM) handler could perform a callout to code located in non-SMM/untrusted memory. A highly privileged attacker could, with active user interaction and under high complexity and present preconditions, trigger execution of attacker-controlled code in SMM, potentially compromising the system’s confidentiality, integrity, and availability.

CVSS Base Scores

version 3.1