Vulnerability Report

CVE-2026-4480

RCE

Title: RCE in Samba Printing Subsystem

RCE

Proof Of Concept

PoC Available for CVE-2026-4480

CWE Category CWE-78

Published Date May 26, 2026

Modified Date Jul 15, 2026

Exploit Status Available

Score 9.0 CVSS v3.1

Exploit Probability (EPSS)

12.80%

Vulnerability Summary

CVE-2026-4480: 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.

Impacted Vendors

samba 1

sgi 1

redhat 1

Reference Links

https://access.redhat.com/security/cve/CVE-2026-4480 https://bugzilla.redhat.com/show_bug.cgi?id=2452232 https://bugzilla.samba.org/show_bug.cgi?id=16033

CVSS v3.1

Source Entity [email protected]

Severity CRITICAL

9.0

Attack Vector

NETWORK

Complexity

HIGH

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

CHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS v3.1

Source Entity [email protected]

Severity CRITICAL

9.8

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1

Source Entity 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

Severity CRITICAL

9.0

Attack Vector

NETWORK

Complexity

HIGH

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

CHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns