7.5 High

CVE-2026-16445 Dracut: dracut: root code execution via dhcp options command injection in networkmanager initrd module

Description

A flaw was found in dracut. A remote attacker on the adjacent network can exploit this vulnerability by providing specially crafted DHCP options, such as a malicious root-path, next-server, or bootfile name, to a system using dracut's NetworkManager-based initrd network module. These options are improperly handled and written into a temporary shell script without proper escaping, leading to command injection. This allows the attacker to achieve root code execution within the initramfs during system boot.

CVSS 3.1 detail

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

Exploitable from the adjacent network, without an account and without any user action; an attacker can seriously compromise confidentiality, integrity or availability.

Attack vector: Adjacent network
Attack complexity: High
Privileges required: None
Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

Affected products and versions

Product	Affected versions	Fixed in
Red Hat Enterprise Linux 8	Versions not published
Red Hat Enterprise Linux 10	Versions not published
Red Hat Enterprise Linux 6	Versions not published
Red Hat Enterprise Linux 7	Versions not published
Red Hat Enterprise Linux 9	Versions not published
Red Hat Hardened Images 109	earliest → < 109-7.hum1	109-7.hum1
Red Hat OpenShift Container Platform 4	Versions not published
Red Hat Enterprise Linux 8.8 Telecommunications Update Service	Versions not published
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions	Versions not published

Show the 6 other branches

Product	Affected versions	Fixed in
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support	Versions not published
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On	Versions not published
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support	Versions not published
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On	Versions not published
Red Hat OpenShift Container Platform 4.12 412.86	earliest → < 412.86.202610250235-0	412.86.202610250235-0
Red Hat OpenShift Container Platform 5	Versions not published

References

RHSA-2026:26534 access.redhat.com
RHSA-2026:40700 access.redhat.com
RHSA-2026:61252 access.redhat.com
RHSA-2026:69118 access.redhat.com
RHSA-2026:69119 access.redhat.com
RHSA-2026:90272 access.redhat.com
access.redhat.com access.redhat.com
bugzilla.redhat.com bugzilla.redhat.com
RHBZ#2503147 bugzilla.redhat.com
github.com github.com

Timeline

Published July 21, 2026
Last modified November 4, 2026

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