Critical severity9.8NVD Advisory· Published Dec 18, 2019· Updated Jun 17, 2026
CVE-2019-5079
CVE-2019-5079
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.
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Affected products
2Patches
Vulnerability mechanics
References
1- talosintelligence.com/vulnerability_reports/TALOS-2019-0871nvdExploitThird Party Advisory
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