CVE-2026-6893
HIGHDracut: dracut: root code execution via dhcp options command injection
Title source: cnaDescription
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.
References (7)
Core 7
Core References
Vendor Advisory vendor-advisory
x_refsource_redhat
RHSA-2026:26533
https://access.redhat.com/errata/RHSA-2026:26533
Vendor Advisory vendor-advisory
x_refsource_redhat
RHSA-2026:26532
https://access.redhat.com/errata/RHSA-2026:26532
Vendor Advisory vendor-advisory
x_refsource_redhat
RHSA-2026:26534
https://access.redhat.com/errata/RHSA-2026:26534
Vendor Advisory vendor-advisory
x_refsource_redhat
RHSA-2026:26713
https://access.redhat.com/errata/RHSA-2026:26713
Vdb Entry, X_Refsource_Redhat vdb-entry
x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2026-6893
Issue Tracking, X_Refsource_Redhat issue-tracking
x_refsource_redhat
RHBZ#2459963
https://bugzilla.redhat.com/show_bug.cgi?id=2459963
Scores
CVSS v3
7.5
EPSS
0.0109
EPSS Percentile
62.0%
Attack Vector
ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-78
Status
published
Products (11)
Red Hat/Red Hat Enterprise Linux 10
Red Hat/Red Hat Enterprise Linux 10
0:107-7.el10_2
Red Hat/Red Hat Enterprise Linux 6
Red Hat/Red Hat Enterprise Linux 7
Red Hat/Red Hat Enterprise Linux 8
Red Hat/Red Hat Enterprise Linux 8
0:049-244.git20260529.el8_10
Red Hat/Red Hat Enterprise Linux 9
Red Hat/Red Hat Enterprise Linux 9
0:057-115.git20260527.el9_8
Red Hat/Red Hat Hardened Images
Red Hat/Red Hat Hardened Images
109-6.hum1
... and 1 more
Published
Jun 10, 2026
Tracked Since
Jun 11, 2026