CVE-2019-5073

Name: CVE-2019-5073
Creator: NVD / NIST
Published: 2019-12-18T21:15:13.897+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.62%

Last modified Jun 17, 2026

CVE-2019-5073 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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. EPSS estimates a 1.62% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS Probability

1.62%

73.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Wago	Pfc 200 Firmware	03.00.39\(12\)
Wago	Pfc 200 Firmware	03.01.07\(13\)
Wago	Pfc 100 Firmware	03.00.39\(12\)

References

https://talosintelligence.com/vulnerability_reports/TALOS-2019-0862Exploit, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0862Exploit, Third Party Advisory

Timeline

Published: Dec 18, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-5073?

How severe is CVE-2019-5073?

CVE-2019-5073 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.62% probability of exploitation in the next 30 days.

How do I fix CVE-2019-5073?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-5073?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST