Linux Distros Unpatched Vulnerability : CVE-2025-31648

low Nessus Plugin ID 298652

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

- 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. (CVE-2025-31648)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

Plugin Details

Severity: Low

ID: 298652

File Name: unpatched_CVE_2025_31648.nasl

Version: 1.5

Type: local

Agent: unix

Family: Misc.

Published: 2/11/2026

Updated: 3/5/2026

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Medium

Base Score: 4.1

Temporal Score: 3.5

Vector: CVSS2#AV:L/AC:M/Au:S/C:P/I:P/A:P

CVSS Score Source: CVE-2025-31648

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.4

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

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

CVSS v4

Risk Factor: Low

Base Score: 1.8

Threat Score: 0.2

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:14.04:-:lts, cpe:/o:centos:centos:7, cpe:/o:debian:debian_linux:11.0, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:9, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:6, cpe:/o:centos:centos:8, p-cpe:/a:canonical:ubuntu_linux:intel-microcode, p-cpe:/a:debian:debian_linux:intel-microcode, p-cpe:/a:redhat:enterprise_linux:microcode_ctl, cpe:/o:debian:debian_linux:12.0, cpe:/o:redhat:enterprise_linux:10, cpe:/o:debian:debian_linux:13.0, p-cpe:/a:centos:centos:microcode_ctl

Required KB Items: Host/cpu, Host/local_checks_enabled, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 2/10/2026

Reference Information

CVE: CVE-2025-31648

Detections

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