CVE-2026-4480
criticalA flaw was found in the Samba printing subsystem.
Vendor / product: Redhat — openshift container platform
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
9.0
9.0 (CVSS v3.1)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (secalert@redhat.com)
Timeline (UTC)
Published: 2026-05-26 15:16
Modified: 2026-11-04 23:17
NVD status: Modified
Last synced 39 minutes ago
Verified against the source API 2026-11-04 23:38 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
redhat / openshift_container_platform 4.0
samba / samba ≥4.1.0 <4.2.1
redhat / enterprise_linux 7.0, 8.0, 9.0, 10.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://bugzilla.samba.org/show_bug.cgi?id=16033
Patch / mitigation: https://access.redhat.com/security/cve/CVE-2026-4480
Patch / mitigation: https://access.redhat.com/security/cve/CVE-2026-4480
References
- https://access.redhat.com/errata/RHSA-2026:22644 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:22963 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:25049 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:25979 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:28053 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:28054 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:28055 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:28056 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:28057 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:28058 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:28132 secalert@redhat.com
- https://access.redhat.com/security/cve/CVE-2026-4480 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2452232 secalert@redhat.com
- https://bugzilla.samba.org/show_bug.cgi?id=16033 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:22644 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- https://access.redhat.com/errata/RHSA-2026:22963 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- https://access.redhat.com/errata/RHSA-2026:25049 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- https://access.redhat.com/errata/RHSA-2026:25979 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- https://access.redhat.com/errata/RHSA-2026:28053 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- https://access.redhat.com/errata/RHSA-2026:28054 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- https://access.redhat.com/errata/RHSA-2026:28055 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- https://access.redhat.com/errata/RHSA-2026:28056 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- https://access.redhat.com/errata/RHSA-2026:28057 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- https://access.redhat.com/errata/RHSA-2026:28058 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- https://access.redhat.com/errata/RHSA-2026:28132 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Data sources
NVD CVE API 2.0 — fetched 2026-11-04 23:38 UTC · record ↗