CVE-2019-5074: Wago Pfc 100 Firmware
Critical severity, CVSS 9.8. EPSS: 3.3% chance of exploitation in the next 30 days.
An exploitable stack buffer overflow vulnerability exists in the iocheckd service ''I/O-Check'' functionality of WAGO PFC200 Firmware version 03.01.07(13), WAGO PFC200 Firmware version 03.00.39(12) and WAGO PFC100 Firmware version 03.00.39(12). A specially crafted set of packets can cause a stack buffer overflow, resulting in code execution. An attacker can send unauthenticated packets to trigger this vulnerability.
Affected products
Published 2019-12-18. Last modified 2026-06-17.