Command Injection Vulnerability in Dracut Affecting Red Hat
CVE-2026-15816

7.5HIGH

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
7 August 2026

What is CVE-2026-15816?

A vulnerability exists in Dracut that allows an attacker on an adjacent network to exploit a flaw in the way the die() error-handling function writes messages to shell scripts. The lack of proper shell-quoting in the handling of messages from the DHCP ROOT_PATH option may allow the attacker, who controls a rogue DHCP server, to inject command-substitution sequences. This risky behavior can lead to the execution of arbitrary commands with root privileges when the affected system’s emergency hook scripts are sourced during standard boot-failure handling. Addressing this vulnerability is crucial to maintaining system integrity and security.

References

https://access.redhat.com/security/cve/CVE-2026-15816
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2459963
https://bugzilla.redhat.com/show_bug.cgi?id=2500889
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Adjacent Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

This issue was discovered by Pavel Valena (Red Hat).
.