Linux Distros Unpatched Vulnerability : CVE-2026-16118

critical Nessus Plugin ID 327697

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 xdgmime. A heap-based buffer overflow can be triggered in
_xdg_mime_magic_parse_magic_line() in the xdgmimemagic.c file on little-endian systems when an attacker- controlled MIME magic file in a user-writable XDG data location (e.g., in the $XDG_DATA_HOME/mime/magic path) is parsed by an application performing MIME type detection (e.g., via g_content_type_guess()). When performing byte-swap, incorrect pointer arithmetic on the write side causes an out-of-bounds write of 2 bytes, resulting in an application crash or memory corruption. (CVE-2026-16118)

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: Critical

ID: 327697

File Name: unpatched_CVE_2026_16118.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Misc.

Published: 7/18/2026

Updated: 7/18/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.4

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

CVSS Score Source: CVE-2026-16118

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9

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

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

Vulnerability Information

CPE: p-cpe:/a:centos:centos:glib2-doc, p-cpe:/a:redhat:enterprise_linux:webkitgtk4-doc, p-cpe:/a:redhat:enterprise_linux:glib2-tests, p-cpe:/a:redhat:enterprise_linux:glib2-devel, p-cpe:/a:redhat:enterprise_linux:webkit2gtk3-jsc, p-cpe:/a:centos:centos:webkit2gtk3-plugin-process-gtk2, p-cpe:/a:centos:centos:glib2, p-cpe:/a:centos:centos:webkitgtk4-plugin-process-gtk2, p-cpe:/a:redhat:enterprise_linux:webkit2gtk3-devel, p-cpe:/a:centos:centos:glib2-tests, p-cpe:/a:centos:centos:webkitgtk4-jsc, p-cpe:/a:redhat:enterprise_linux:webkitgtk4-jsc-devel, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:centos:centos:glib2-static, p-cpe:/a:redhat:enterprise_linux:webkitgtk4-jsc, p-cpe:/a:centos:centos:webkitgtk4, cpe:/o:centos:centos:8, p-cpe:/a:redhat:enterprise_linux:glib2-doc, p-cpe:/a:centos:centos:webkitgtk4-doc, p-cpe:/a:centos:centos:webkitgtk4-jsc-devel, cpe:/o:redhat:enterprise_linux:10, p-cpe:/a:centos:centos:webkit2gtk3-jsc-devel, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:redhat:enterprise_linux:glib2, p-cpe:/a:redhat:enterprise_linux:webkitgtk4-plugin-process-gtk2, p-cpe:/a:redhat:enterprise_linux:webkitgtk4-devel, p-cpe:/a:redhat:enterprise_linux:webkit2gtk3, p-cpe:/a:centos:centos:webkit2gtk3-jsc, cpe:/o:centos:centos:7, p-cpe:/a:redhat:enterprise_linux:glib2-static, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:webkitgtk4, p-cpe:/a:centos:centos:webkit2gtk3, p-cpe:/a:redhat:enterprise_linux:webkit2gtk3-plugin-process-gtk2, p-cpe:/a:centos:centos:glib2-devel, p-cpe:/a:redhat:enterprise_linux:webkit2gtk3-jsc-devel, p-cpe:/a:centos:centos:webkitgtk4-devel, p-cpe:/a:centos:centos:webkit2gtk3-devel

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: 7/17/2026

Reference Information

CVE: CVE-2026-16118

Detections

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