Is CVE-2019-5080 actively exploited?

No active exploitation of CVE-2019-5080 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-5080 be exploited remotely?

Yes. CVE-2019-5080 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2019-5080?

CVE-2019-5080 has a CVSS score of 9.1 (CRITICAL).

HOME VULNERABILITIESCVE-2019-5080

CRITICAL

CVE-2019-5080

CWE-306Published: December 18, 2019· Updated: Jun 17, 2026

9.1

CVSS v3.1

Official Description

An exploitable denial-of-service vulnerability exists in the iocheckd service "I/O-Check" functionality of WAGO PFC 200 Firmware versions 03.01.07(13) and 03.00.39(12), and WAGO PFC100 Firmware version 03.00.39(12). A single packet can cause a denial of service and weaken credentials resulting in the default documented credentials being applied to the device. An attacker can send an unauthenticated packet to trigger this vulnerability.

NVD Source

Technical Analysis

CVE-2019-5080 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 full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.1.