CVE-2016-2056: Debian Linux

High severity, CVSS 8.8. EPSS: 54.5% chance of exploitation in the next 30 days.

xymond in Xymon 4.1.x, 4.2.x, and 4.3.x before 4.3.25 allow remote authenticated users to execute arbitrary commands via shell metacharacters in the adduser_name argument in (1) web/useradm.c or (2) web/chpasswd.c.

Affected products

• Debian Debian Linux: version 8.0 only
• Xymon Xymon: version 4.1.0 only; version 4.1.1 only; version 4.1.2 only; version 4.2 only; version 4.2.0 only; version 4.2.2 only; …

Published 2016-04-13. Last modified 2026-06-17.