Linux Distros Unpatched Vulnerability : CVE-2026-15588

medium Nessus Plugin ID 327997

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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.

- A denial-of-service and resource exhaustion vulnerability exists within the `GDBus` component of GLib. The `gdbusauth` authentication mechanism fails to enforce proper length limitations on data lines read from a client. An unauthenticated local or remote attacker can exploit this lack of input validation by sending excessively long streams of data, causing the application to consume massive amounts of system memory and CPU, potentially leading to a crash or system hang. (CVE-2026-15588)

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: Medium

ID: 327997

File Name: unpatched_CVE_2026_15588.nasl

Version: 1.2

Type: Local

Agent: unix

Family: Misc.

Published: 7/20/2026

Updated: 7/21/2026

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: 2.8

Percentile: 22.5

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 4.3

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

CVSS Score Source: CVE-2026-15588

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.9

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

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:redhat:enterprise_linux:10, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:centos:centos:glib2-devel, p-cpe:/a:centos:centos:glib2-doc, p-cpe:/a:centos:centos:glib2-fam, p-cpe:/a:centos:centos:glib2-static, p-cpe:/a:centos:centos:glib2-tests, p-cpe:/a:centos:centos:glib2, p-cpe:/a:centos:centos:mingw-glib2, p-cpe:/a:centos:centos:mingw32-glib2-static, p-cpe:/a:centos:centos:mingw32-glib2, p-cpe:/a:centos:centos:mingw64-glib2-static, p-cpe:/a:centos:centos:mingw64-glib2, p-cpe:/a:redhat:enterprise_linux:glib2-devel, p-cpe:/a:redhat:enterprise_linux:glib2-doc, p-cpe:/a:redhat:enterprise_linux:glib2-fam, p-cpe:/a:redhat:enterprise_linux:glib2-static, p-cpe:/a:redhat:enterprise_linux:glib2-tests, p-cpe:/a:redhat:enterprise_linux:glib2, p-cpe:/a:redhat:enterprise_linux:mingw-glib2, p-cpe:/a:redhat:enterprise_linux:mingw32-glib2-static, p-cpe:/a:redhat:enterprise_linux:mingw32-glib2, p-cpe:/a:redhat:enterprise_linux:mingw64-glib2-static, p-cpe:/a:redhat:enterprise_linux:mingw64-glib2

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: 7/20/2026

Reference Information

CVE: CVE-2026-15588

Detections

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