Is CVE-2019-5075 actively exploited?

No active exploitation of CVE-2019-5075 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-5075 be exploited remotely?

Yes. CVE-2019-5075 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2019-5075?

CVE-2019-5075 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2019-5075

CRITICAL

CVE-2019-5075

CWE-787Published: December 18, 2019· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

An exploitable stack buffer overflow vulnerability exists in the command line utility getcouplerdetails 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 sent to the iocheckd service "I/O-Check" can cause a stack buffer overflow in the sub-process getcouplerdetails, resulting in code execution. An attacker can send unauthenticated packets to trigger this vulnerability.

NVD Source

Technical Analysis

CVE-2019-5075 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.