Description
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.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected products
- RedHat / enterprise_linux7.0 – 7.0
- RedHat / enterprise_linux8.0 – 8.0
- RedHat / enterprise_linux9.0 – 9.0
- RedHat / enterprise_linux10.0 – 10.0
- RedHat / openshift_container_platform4.0 – 4.0
- Samba / Samba4.1.0 – 4.2.1
Exploits & proofs of concept
- nucleiSamba Printing Subsystem - Remote Code Executionby projectdiscovery
References
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:22644
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:22963
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:25049
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:25979
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:28053
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:28054
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:28055
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:28056
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:28057
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:28058
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:28132
- VENDOR_ADVISORYhttps://access.redhat.com/security/cve/CVE-2026-4480
- MISChttps://bugzilla.redhat.com/show_bug.cgi?id=2452232
- MISChttps://bugzilla.samba.org/show_bug.cgi?id=16033
Updated 5m ago · 8 sources