Detections
Analytics

Oracle Linux 10 / 8 / 9 : microcode_ctl (ELSA-2026-500239)

high Nessus Plugin ID 342712

Synopsis

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

Description

The remote Oracle Linux 10 / 8 / 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2026-500239 advisory.

 [4:20260812-0.1]
 - update to 20260812, resolves:
 CVE-2026-20705, CVE-2026-20707, CVE-2026-20708, CVE-2026-20712, CVE-2026-20713, CVE-2026-20715, CVE-2026-20734, CVE-2026-20760, CVE-2026-20775, CVE-2026-20885, CVE-2026-20898, CVE-2026-20901, CVE-2026-20917, CVE-2026-31356

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-2026-500239.html

Plugin Details

Severity: High

ID: 342712

File Name: oraclelinux_ELSA-2026-500239.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 9/3/2026

Updated: 9/3/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.14

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-2026-20898

CVSS v3

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

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

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

CVSS v4

Risk Factor: High

Base Score: 8.5

Threat Score: 5.4

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

CPE: cpe:/o:oracle:linux:10, cpe:/o:oracle:linux:10:2:baseos_patch, cpe:/o:oracle:linux:8, cpe:/o:oracle:linux:8:10:baseos_patch, 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: 9/2/2026

Vulnerability Publication Date: 8/11/2026

Reference Information

CVE: CVE-2025-31356, CVE-2026-20705, CVE-2026-20707, CVE-2026-20708, CVE-2026-20712, CVE-2026-20713, CVE-2026-20715, CVE-2026-20734, CVE-2026-20760, CVE-2026-20775, CVE-2026-20885, CVE-2026-20898, CVE-2026-20901, CVE-2026-20917