Is CVE-2026-4480 actively exploited?

No active exploitation of CVE-2026-4480 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-4480 be exploited remotely?

Yes. CVE-2026-4480 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-4480?

CVE-2026-4480 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2026-4480

CWE-78Published: May 26, 2026· Updated: Jun 1, 2026

9.8

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2026-4480 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.