Improper Handling of Values Affecting intel-microcode package, versions <3.20260210.0ubuntu0.18.04.1+esm1


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.13% (4th percentile)

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  • Snyk IDSNYK-UBUNTU1804-INTELMICROCODE-15356735
  • published26 Feb 2026
  • disclosed10 Feb 2026

Introduced: 10 Feb 2026

CVE-2025-31648  (opens in a new tab)
CWE-229  (opens in a new tab)

How to fix?

Upgrade Ubuntu:18.04 intel-microcode to version 3.20260210.0ubuntu0.18.04.1+esm1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream intel-microcode package and not the intel-microcode package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

Improper handling of values in the microcode flow for some Intel(R) Processor Family may allow an escalation of privilege. Startup code and smm adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. 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 (low), integrity (low) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (low), integrity (low) and availability (none) impacts.

CVSS Base Scores

version 3.1