Detections
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Linux Distros Unpatched Vulnerability : CVE-2026-128241

medium Nessus Plugin ID 380979

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.

 - The xmlwf tool in libexpat through 2.10.0 contains a symlink following vulnerability because -d output mode opens files with fopen(wb), which follows symbolic links. Local attackers with write access to the output directory can plant a symlink at the expected output name to truncate or overwrite files writable by the xmlwf user. (CVE-2026-128241)

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://ubuntu.com/security/CVE-2026-128241

Plugin Details

Severity: Medium

ID: 380979

File Name: unpatched_CVE_2026_128241.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Misc.

Published: 11/14/2026

Updated: 11/14/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.83

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.8

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

CVSS Score Source: CVE-2026-128241

CVSS v3

Risk Factor: Medium

Base Score: 4.4

Temporal Score: 4.1

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

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

CVSS v4

Risk Factor: Medium

Base Score: 4.1

Threat Score: 0.6

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:14.04:-:lts, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:26.04:-:lts, cpe:/o:canonical:ubuntu_linux:26.10, p-cpe:/a:canonical:ubuntu_linux:ayttm, p-cpe:/a:canonical:ubuntu_linux:cableswig, p-cpe:/a:canonical:ubuntu_linux:cadaver, p-cpe:/a:canonical:ubuntu_linux:coin3, p-cpe:/a:canonical:ubuntu_linux:expat, p-cpe:/a:canonical:ubuntu_linux:gdcm, p-cpe:/a:canonical:ubuntu_linux:insighttoolkit4, p-cpe:/a:canonical:ubuntu_linux:libxmltok, p-cpe:/a:canonical:ubuntu_linux:matanza, p-cpe:/a:canonical:ubuntu_linux:smart, p-cpe:/a:canonical:ubuntu_linux:swish-e, p-cpe:/a:canonical:ubuntu_linux:tdom, p-cpe:/a:canonical:ubuntu_linux:vnc4, p-cpe:/a:canonical:ubuntu_linux:vtk, p-cpe:/a:canonical:ubuntu_linux:wbxml2, p-cpe:/a:canonical:ubuntu_linux:xmlrpc-c

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: 11/13/2026

Reference Information

CVE: CVE-2026-128241