CVE-2026-4480
CriticalCVSS 9.0Exploitation Probability (EPSS)
Very high risk96th percentile - higher than 96% of all known CVEs
Summary
The Samba printing subsystem contains a vulnerability where the client-controlled job description string is passed to the command configured with the 'print command' setting via the '%J' substitution character without escaping shell meta characters. A remote attacker can send a specially crafted print job description containing unescaped shell characters, leading to remote code execution.
Risk Assessment
An attacker can remotely execute arbitrary code on the Samba server, potentially leading to compromise of the file system and data.
Recommendation
Update Samba to a patched version or apply proper escaping in the print command configuration.
Original NVD description (English source)
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.