Linux Distros Unpatched Vulnerability : CVE-2026-4892

high Nessus Plugin ID 314262

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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 heap-based out-of-bounds write vulnerability in the DHCPv6 implementation of dnsmasq allows local attackers to execute arbitrary code with root privileges via a crafted DHCPv6 packet. (CVE-2026-4892)

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: High

ID: 314262

File Name: unpatched_CVE_2026_4892.nasl

Version: 1.5

Type: Local

Agent: unix

Family: Misc.

Published: 5/11/2026

Updated: 5/27/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.1

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

CVSS Score Source: CVE-2026-4892

CVSS v3

Risk Factor: High

Base Score: 8.4

Temporal Score: 7.7

Vector: CVSS:3.0/AV:L/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:redhat:enterprise_linux:dnsmasq-utils, cpe:/o:centos:centos:7, cpe:/o:debian:debian_linux:11.0, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:debian:debian_linux:dnsmasq, cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:centos:centos:dnsmasq-utils, p-cpe:/a:redhat:enterprise_linux:dnsmasq, p-cpe:/a:centos:centos:dnsmasq

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

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 5/11/2026

Reference Information

CVE: CVE-2026-4892

Detections

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