Description
An exploitable denial of service 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). A specially crafted set of packets can cause a denial of service, resulting in the device entering an error state where it ceases all network communications. An attacker can send unauthenticated packets to trigger this vulnerability.
References (1)
Core 1
Core References
Third Party Advisory x_refsource_misc
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0870
Scores
CVSS v3
9.1
EPSS
0.0165
EPSS Percentile
73.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Details
CWE
CWE-306
Status
published
Products (3)
wago/pfc_100_firmware
03.00.39\(12\)
wago/pfc_200_firmware
03.00.39\(12\)
wago/pfc_200_firmware
03.01.07\(13\)
Published
Dec 18, 2019
Tracked Since
Feb 18, 2026