MEDIUM

CVE-2019-5073

CVSS v3

5.3

MEDIUM

EPSS Score

1.6 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

ICSA-20-065-01 CISA4 known affected
WAGO I/O-CHECK
Series PFC200: (750-82xx/xxx-xxx) · I/O-CHECK Series PFC100 and Series PFC200: 750-823 750-832/xxx-xxx 750-862 750-890/xxx-xxx 750-891 · Series PFC100: (750-81xx/xxx-xxx)

Full record on NVD

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.

Technical details

Published: 2019-12-18

Frequently asked questions

What is CVE-2019-5073?

Is CVE-2019-5073 actively exploited?

Active exploitation of CVE-2019-5073 has not been confirmed. Its EPSS score was 1.6% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

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

CVE-2019-5073 has a CVSS v3 base score of 5.3 (MEDIUM severity).

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