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.

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-6297-1 samba security update
Ubuntu USN Ubuntu USN USN-8306-1 Samba vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

Remove ```"%J"``` from the "print command" in ```smb.conf``` entry.

History

Wed, 27 May 2026 10:30:00 +0000

Type Values Removed Values Added
First Time appeared Redhat openshift Container Platform
Samba
Samba samba
Vendors & Products Redhat openshift Container Platform
Samba
Samba samba

Wed, 27 May 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Important


Tue, 26 May 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 26 May 2026 14:30:00 +0000

Type Values Removed Values Added
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.
Title Samba: samba: remote code execution in printing subsystem via unescaped job description
First Time appeared Redhat
Redhat enterprise Linux
Redhat openshift
Weaknesses CWE-78
CPEs cpe:/a:redhat:openshift:4
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat openshift
References
Metrics cvssV3_1

{'score': 8.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-05-27T12:56:00.952Z

Reserved: 2026-03-19T21:17:35.193Z

Link: CVE-2026-4480

cve-icon Vulnrichment

Updated: 2026-05-26T15:08:51.431Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-05-26T15:16:40.937

Modified: 2026-05-26T19:08:15.080

Link: CVE-2026-4480

cve-icon Redhat

Severity : Important

Publid Date: 2026-05-26T13:43:46Z

Links: CVE-2026-4480 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-05-27T10:05:14Z

Weaknesses