Linux Distros Unpatched Vulnerability : CVE-2026-6893

critical Nessus Plugin ID 320498

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 dracut. A remote attacker on the adjacent network can exploit this vulnerability by providing specially crafted DHCP (Dynamic Host Configuration Protocol) options, such as a malicious hostname, to a system using dracut's legacy DHCP path. These options are improperly handled and written into temporary shell scripts without proper escaping, leading to command injection. This allows the attacker to achieve root code execution within the initramfs, potentially compromising the system's boot and network behavior. (CVE-2026-6893)

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: 320498

File Name: unpatched_CVE_2026_6893.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Misc.

Published: 6/11/2026

Updated: 6/11/2026

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: Critical

Base Score: 10

Temporal Score: 8.5

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

CVSS Score Source: CVE-2026-6893

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:dracut-fips, p-cpe:/a:redhat:enterprise_linux:dracut-fips-aesni, p-cpe:/a:centos:centos:dracut-config-generic, p-cpe:/a:centos:centos:dracut-tools, p-cpe:/a:redhat:enterprise_linux:dracut, p-cpe:/a:centos:centos:dracut-caps, p-cpe:/a:centos:centos:dracut-live, p-cpe:/a:centos:centos:dracut-squash, p-cpe:/a:redhat:enterprise_linux:dracut-config-generic, p-cpe:/a:centos:centos:dracut, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:dracut-network, cpe:/o:centos:centos:8, p-cpe:/a:redhat:enterprise_linux:dracut-tools, p-cpe:/a:redhat:enterprise_linux:dracut-squash, p-cpe:/a:centos:centos:dracut-fips-aesni, cpe:/o:redhat:enterprise_linux:10, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:redhat:enterprise_linux:dracut-fips, p-cpe:/a:centos:centos:dracut-config-rescue, p-cpe:/a:redhat:enterprise_linux:dracut-caps, p-cpe:/a:redhat:enterprise_linux:dracut-live, cpe:/o:centos:centos:7, p-cpe:/a:redhat:enterprise_linux:dracut-config-rescue, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:centos:centos:dracut-network

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: 6/10/2026

Reference Information

CVE: CVE-2026-6893

Detections

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