What is CVE-2019-5179?

CVE-2019-5179 is a high-severity vulnerability in Wago Pfc200, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2020-03-12.

How severe is CVE-2019-5179?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Wago Pfc200

CVE-2019-5179

An exploitable stack buffer overflow vulnerability vulnerability exists in the iocheckd service ‘I/O-Check’ functionality of WAGO PFC 200 Firmware version 03.02.02(14). An attacker can send a specially crafted packet to trigger the parsing of this cache file.

Vulnerability class: Buffer Overflow

Published 2020-03-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (51.4th percentile), scored 2026-10-31.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Wago Pfc200
Wago Pfc200 Firmware — versions 03.02.02\(14\), 03.02.02(14)
Wago Pfc200 — versions Firmware version 03.02.02(14)

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

talosintelligence.com/vulnerability_reports/TALOS-2019-0963 (Technical Description, Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2019-5179?: CVE-2019-5179 is a high-severity vulnerability in Wago Pfc200, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2020-03-12.
How severe is CVE-2019-5179?: High severity. CVSS v3 base score is 7.8 out of 10.