Is CVE-2019-5073 actively exploited?

No active exploitation of CVE-2019-5073 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-5073 be exploited remotely?

Yes. CVE-2019-5073 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2019-5073?

CVE-2019-5073 has a CVSS score of 5.3 (MEDIUM).

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MEDIUM

CVE-2019-5073

CWE-200Published: December 18, 2019· Updated: Jun 17, 2026

5.3

CVSS v3.1

Official Description

An exploitable information exposure 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 an external tool to fail, resulting in uninitialized stack data to be copied to the response packet buffer. An attacker can send unauthenticated packets to trigger this vulnerability.

NVD Source

Technical Analysis

CVE-2019-5073 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.

From a weakness classification perspective (CWE-200): Information exposure vulnerabilities leak sensitive data to unauthorized actors.