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Vulnerability record · CVE-2026-16445 · published 21 July 2026

CVE-2026-16445: OS command injection vulnerability

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.

7.5 CVSS 3.1 High EPSS 1.1% · top 35.3% CWE-78 · OS command injection Awaiting Analysis
7.5CVSS 3.1 base score
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
9References
21 Sep 2026Last modified by NVD

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

References

LinkTags
https://access.redhat.com/errata/RHSA-2026:26534
https://access.redhat.com/errata/RHSA-2026:40700
https://access.redhat.com/errata/RHSA-2026:61252
https://access.redhat.com/errata/RHSA-2026:69118
https://access.redhat.com/errata/RHSA-2026:69119
https://access.redhat.com/security/cve/CVE-2026-16445
https://bugzilla.redhat.com/show_bug.cgi?id=2459963
https://bugzilla.redhat.com/show_bug.cgi?id=2503147
https://github.com/dracutdevs/dracut/commit/e509c638e6

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Source: NIST National Vulnerability Database (record CVE-2026-16445), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.