CVE-2026-4480
Samba: samba: remote code execution in printing subsystem via unescaped job description
CRITICAL 9.8EPSS 13.9%
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.
- Affected
- Red Hat · Red Hat Enterprise Linux 10 · Red Hat Enterprise Linux 10.0 Extended Update Support · Red Hat Enterprise Linux 7 Extended Lifecycle Support · Red Hat Enterprise Linux 8 · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support · Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
- CVSS v3.1 NVD
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS v3.1 CNA
- 9.0 CRITICAL
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H - EPSS
- 13.93% chance of exploitation in the next 30 days, 97th percentile
- Nuclei
- critical · CWE-78
- Published
- 2026-05-26
- Updated
- 2026-09-01
Proof-of-concept exploits (10)
- TheCyberGeek/CVE-2026-4480-PoC23★ · 2026-06-05
- 0xBlackash/CVE-2026-44802★ · 2026-06-09
- robinxiang/CVE-2026-44801★ · 2026-06-07
- CarlosEduardoPM/CVE-2026-4480-POC2★ · 2026-10-03
- Vusal777/CVE-2026-4480-exploit-poc0★ · 2026-06-16
- ClearLotus-git/CVE-2026-4480-PoC0★ · 2026-06-20
- SafeBreach-Labs/ForgottenButNotGone10★ · 2026-08-03
- exploitnotes/security-research0★ · 2026-07-10
- saitoken241/CVE-2026-4480-POC2★ · 2026-10-03
- AlanNewberry/CVE-2026-4480-samba-print-command-injection-rce2★ · 2026-10-03
Nuclei templates (1)
Security advisories
- https://bugzilla.samba.org/show_bug.cgi?id=16033
- https://access.redhat.com/security/cve/CVE-2026-4480
- https://bugzilla.redhat.com/show_bug.cgi?id=2452232