CVE-2026-4480
Samba: samba: remote code execution in printing subsystem via unescaped job description
CVSS Score
9.0
EPSS Score
0.0%
EPSS Percentile
0th
A flaw was found in the Samba printing subsystem. Samba passes the client-controlled job description string to the command configured with the "print command" setting via the "%J" substitution character without escaping shell meta characters. A remote attacker could exploit this vulnerability by sending a specially crafted print job description that contains unescaped shell characters. This could lead to remote code execution on the affected system.
| CWE | CWE-78 |
| Vendor | red hat |
| Product | red hat enterprise linux 10 |
| Published | May 26, 2026 |
| Last Updated | Jul 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Red Hat / Red Hat Enterprise Linux 10
All versions affected Red Hat / Red Hat Enterprise Linux 10.0 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 7 Extended Lifecycle Support
All versions affected Red Hat / Red Hat Enterprise Linux 7 Extended Lifecycle Support
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
All versions affected Red Hat / Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On
All versions affected Red Hat / Red Hat Enterprise Linux 8.8 Telecommunications Update Service
All versions affected Red Hat / Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 9.6 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 6
All versions affected Red Hat / Red Hat Enterprise Linux 6
All versions affected Red Hat / Red Hat OpenShift Container Platform 4
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2026:22644 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:22963 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:25049 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:25979 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:28053 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:28054 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:28055 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:28056 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:28057 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:28058 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:28132 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-4480 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2452232 bugzilla.samba.org: https://bugzilla.samba.org/show_bug.cgi?id=16033 security.access.redhat.com: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4480.json
Credits
Red Hat would like to thank Arjun Basnet (Securin Labs), John Walker (ZeroPath), and Ron Ben Yizhak (SafeBreach) for reporting this issue.