CVE-2026-4480NVD

Vulnerability Summary

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.

Severity Level

CRITICAL(9.0)

Published Date

May 26, 2026

Last Modified

Sep 1, 2026

PoC

Available(Nuclei)

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

4.31%Probability

Root Weakness (CWE)

CWE-78: OS Command Injection ↗

The software constructs all or part of an OS command using externally-influenced input, but does not properly neutralize special elements.

CVSS v3.1 Base Metrics — Score 9.0 (CRITICAL)

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeChanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

Affected & Patched Versions

Affected Versions

Redhat Openshift Container Platform
Samba Samba >= 4.1.0 and < 4.2.1
Redhat Enterprise Linux

Patched Versions

Samba Samba 4.2.1

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