description: An exploitable double free vulnerability exists in the iocheckd service "I/O-Check" functionality of WAGO PFC 200. A specially crafted XML cache file written to a specific location on the device can cause a heap pointer to be freed twice, resulting in a denial of service and potentially code execution. An attacker can send a specially crafted packet to trigger the parsing of this cache file.
problem types: double-free
affected:
{
product: Wago
vendor: n/a
versions:
status: affected, version: WAGO PFC200 Firmware version 03.02.02(14)
}