CVE-2026-6893 HIGH

CVE-2026-6893: Dracut: dracut: root code execution via dhcp options command injection

Vendor Red Hat
Product Red Hat Enterprise Linux 6
Weakness CWE-78
Published June 10, 2026
Last update June 30, 2026

CVSS base score

7.5/10
Attack vector Adjacent
Attack complexity High
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 10, 2026 CVE published
June 30, 2026 Record updated