CVE-2017-16664: Debian Linux

High severity, CVSS 8.8. EPSS: 2.5% chance of exploitation in the next 30 days.

Code injection exists in Kernel/System/Spelling.pm in Open Ticket Request System (OTRS) 5 before 5.0.24, 4 before 4.0.26, and 3.3 before 3.3.20. In the agent interface, an authenticated remote attacker can execute shell commands as the webserver user via URL manipulation.

Affected products

• Debian Debian Linux: version 7.0 only; version 8.0 only; version 9.0 only
• Otrs Otrs: from 3.3.0, before 3.3.20 (fixed in 3.3.20); from 4.0.0, before 4.0.26 (fixed in 4.0.26); from 5.0.0, before 5.0.24 (fixed in 5.0.24)

Published 2017-11-21. Last modified 2026-06-17.