Information Disclosure is possible on WAGO Series PFC100 and PFC200 devices before FW12 due to improper access control.

published 2019-10-19 7y ago modified 2026-06-17 4mo ago also EUVD-2019-8004

cvss: 5.8; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.8%; EPSS 1.8% chance of exploitation in 30 days, percentile 78%
public exploits: 0; none known

Information Disclosure is possible on WAGO Series PFC100 and PFC200 devices before FW12 due to improper access control. A remote attacker can check for the existence of paths and file names via crafted HTTP requests.

Patch / fix

fixed in 1

wago pfc_firmware 03.00.35\(12\)

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Exploit prediction

1.79% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.0	5.8	CVSS:3.0/AC:L/AV:N/A:N/C:L/I:N/PR:N/S:C/UI:N
NVD	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CNA	3.0	5.8	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:P/I:N/A:N

References

cert.vde.com /de-de/advisories/vde-2019-017
third-party-advisory

Sources

CVE List CVE-2019-18202
NVD CVE-2019-18202

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