Detections
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Oracle Linux 9 : microcode_ctl (ELSA-2026-68011)

high Nessus Plugin ID 368026

Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2026-68011 advisory.

 - Security advisories:
 https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01379.html CVE-2025-31936 https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01404.html CVE-2025-31938 https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01423.html CVE-2026-20917 https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01428.html CVE-2025-35973 https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01435.html CVE-2026-20716 https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01441.html CVE-2026-20760 https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01442.html CVE-2026-20713, CVE-2026-20901 https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01443.html CVE-2026-20707

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected microcode_ctl package.

See Also

https://linux.oracle.com/errata/ELSA-2026-68011.html

Plugin Details

Severity: High

ID: 368026

File Name: oraclelinux_ELSA-2026-68011.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 10/20/2026

Updated: 10/20/2026

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.8

Percentile: 57.82

CVSS v2

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 3.9

Vector: CVSS2#AV:L/AC:H/Au:M/C:C/I:C/A:N

CVSS Score Source: CVE-2025-31936

CVSS v3

Risk Factor: Medium

Base Score: 5.7

Temporal Score: 5

Vector: CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 7

Threat Score: 3.7

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/o:oracle:linux:9, cpe:/o:oracle:linux:9:8:baseos_patch, p-cpe:/a:oracle:linux:microcode_ctl

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/OracleLinux

Exploit Ease: No known exploits are available

Patch Publication Date: 10/12/2026

Vulnerability Publication Date: 8/11/2026

Reference Information

CVE: CVE-2025-31936, CVE-2025-35973