CVE-2019-5168: Wago PFC200 Firmware

High severity, CVSS 7.8. EPSS: 1.3% chance of exploitation in the next 30 days.

An exploitable command injection vulnerability exists in the iocheckd service ‘I/O-Check’ function of the WAGO PFC 200 version 03.02.02(14). An attacker can send a specially crafted XML cache file At 0x1e8a8 the extracted domainname value from the xml file is used as an argument to /etc/config-tools/edit_dns_server domain-name=<contents of domainname node> using sprintf().This command is later executed via a call to system().

Affected products

• Wago PFC200 Firmware: version 03.02.02(14) only

Published 2020-03-11. Last modified 2026-06-17.