WAGO PFC200 Firmware versions 03.01.07(13) Out-of-bounds Write Vulnerability


An exploitable heap buffer overflow vulnerability exists in the iocheckd service “I/O-Check” functionality of WAGO PFC200 Firmware versions 03.01.07(13) and 03.00.39(12), and WAGO PFC100 Firmware version 03.00.39(12). 


The information has been provided by Kelly Leuschner 

The original article can be found at:https://talosintelligence.com/vulnerability_reports/TALOS-2019-0871


A specially crafted set of packets can cause a heap buffer overflow, potentially resulting in code execution. An attacker can send unauthenticated packets to trigger this vulnerability.


Vulnerable Systems:

WAGO PFC200 Firmware versions 03.01.07(13)

WAGO PFC200 Firmware versions 03.00.39(12)

WAGO PFC100 Firmware version 03.00.39(12)


CVE Information:



Disclosure Timeline:
Published Date:12/18/2019

Categories: News