CVE-2019-5079

CRITICAL

WAGO PFC200/100 <3.01.07-3.00.39 - Buffer Overflow

Title source: llm
STIX 2.1

Description

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). 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.

References (1)

Core 1
Core References
Exploit, Third Party Advisory x_refsource_misc
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0871

Scores

CVSS v3 9.8
EPSS 0.0332
EPSS Percentile 87.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-787
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