CVE-2026-4480criticalobserved exploitationCWE-78

Samba: samba: remote code execution in printing subsystem via unescaped job description

92Vexday Risk Score

Patch now. It exploitation observed by VulnCheck and has a working public exploit.

ssvc Actcvss 9epss 14%

from disclosure to weapon10 days

Published on NVDMay 26

1st PoC+10d

VulnCheck+55d

exploitation probability

14%top 4% of all CVEs

observed exploitation

yesVulnCheck

13 public exploit(s)

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

Affected products

public PoCs found — 13

githubgithub.com/TheCyberGeek/CVE-2026-4480-PoC★ 21 githubgithub.com/robinxiang/CVE-2026-4480★ 1 githubgithub.com/CarlosEduardoPM/CVE-2026-4480-POC★ 1 githubgithub.com/0xBlackash/CVE-2026-4480★ 1 githubgithub.com/Cosm3No1de/HTB-Abducted-Writeup★ 0 githubgithub.com/ClearLotus-git/CVE-2026-4480-PoC★ 0 githubgithub.com/Vusal777/CVE-2026-4480-exploit-poc★ 0 vulncheckvulncheck.com/xdb/ae9b02644e6eunverified vulncheckvulncheck.com/xdb/6d271facd15funverified vulncheckvulncheck.com/xdb/697dffa18b35unverified vulncheckvulncheck.com/xdb/dba3c80cc638unverified vulncheckvulncheck.com/xdb/ade93b636707unverified vulncheckvulncheck.com/xdb/601e52805666unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References