CVE-2026-4480

Advisory lineage Upstream: 0 Downstream: 20
Modified
Published: 26 May 2026, 13:56
Last modified:15 Jul 2026, 00:53

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9 CRITICAL
v3.1 (cve.org)
EPSS Score
12.8% MEDIUM
13% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

26 May 2026, 13:56
Published
Vulnerability first disclosed
15 Jul 2026, 00:53
Last Modified
Vulnerability information updated

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 Metrics

  • v3.1•CRITICAL•Score: 9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 12.80%• Percentile: 96%

Techniques & Countermeasures

  • CWE-78•Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

    The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

Affected Systems

  • redhat•enterprise_linux

    7.0 | 8.0 | 9.0 | 10.0

  • redhat•openshift_container_platform

    4.0

  • Unknown•Samba

    ≥ 4.1.0, < 4.2.1

References (15)