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Linux Distros Unpatched Vulnerability : CVE-2026-89098

medium Nessus Plugin ID 366649

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.

 - A flaw was found in nfs-utils. The fsidd daemon improperly handles input received over its local domain socket by relying on program assertions to verify command arguments. A local user can exploit this vulnerability by sending a malformed request lacking the required arguments to trigger an assertion failure. This causes the daemon to crash, resulting in a Denial of Service (DoS) for filesystem identifier lookup services until restarted. (CVE-2026-89098)

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

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2026-89098

https://security-tracker.debian.org/tracker/CVE-2026-89098

Plugin Details

Severity: Medium

ID: 366649

File Name: unpatched_CVE_2026_89098.nasl

Version: 1.2

Type: Local

Agent: unix

Family: Misc.

Published: 10/16/2026

Updated: 10/17/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.69

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.8

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

CVSS Score Source: CVE-2026-89098

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5.1

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

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

Vulnerability Information

CPE: cpe:/o:centos:centos:7, cpe:/o:centos:centos:8, cpe:/o:debian:debian_linux:12.0, cpe:/o:debian:debian_linux:13.0, cpe:/o:redhat:enterprise_linux:10, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:centos:centos:libnfsidmap-devel, p-cpe:/a:centos:centos:libnfsidmap, p-cpe:/a:centos:centos:nfs-utils-coreos, p-cpe:/a:centos:centos:nfs-utils, p-cpe:/a:centos:centos:nfsv4-client-utils, p-cpe:/a:debian:debian_linux:nfs-utils, p-cpe:/a:redhat:enterprise_linux:libnfsidmap-devel, p-cpe:/a:redhat:enterprise_linux:libnfsidmap, p-cpe:/a:redhat:enterprise_linux:nfs-utils-coreos, p-cpe:/a:redhat:enterprise_linux:nfs-utils, p-cpe:/a:redhat:enterprise_linux:nfsv4-client-utils

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

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 10/16/2026

Reference Information

CVE: CVE-2026-89098