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Vulnerability record · CVE-2016-9362 · published 13 February 2017

CVE-2016-9362: Wago pfc200 firmware improper authentication vulnerability

Wago · Pfc200 Firmware

An issue was discovered in WAGO 750-8202/PFC200 prior to FW04 (released August 2015), WAGO 750-881 prior to FW09 (released August 2016), and WAGO 0758-0874-0000-0111. By accessing a specific uniform resource locator (URL) on the web server, a malicious user is able to edit and to view settings without authenticating.

9.1 CVSS 3.0 Critical EPSS 2.1% · top 18.8% CWE-287 · Improper authentication
9.1CVSS 3.0 base score, v2 6.4
2.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

An issue was discovered in WAGO 750-8202/PFC200 prior to FW04 (released August 2015), WAGO 750-881 prior to FW09 (released August 2016), and WAGO 0758-0874-0000-0111. By accessing a specific uniform resource locator (URL) on the web server, a malicious user is able to edit and to view settings without authenticating.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/95074 Third Party AdvisoryVDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-16-357-02 Third Party AdvisoryUS Government Resource
http://www.securityfocus.com/bid/95074 Third Party AdvisoryVDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-16-357-02 Third Party AdvisoryUS Government Resource

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-1698WAGO Controllers OS Command Injection Allows Unauthenticated User CreationMultiple WAGO controller and touch panel firmware products contain an OS command injection flaw (CWE-78) that lets an unauthenticated, remote attacke…EPSS 82%analysed9.8CVE-2022-45138Wago 751-9301 firmware missing authentication for critical function vulnerabilityThe configuration backend of the web-based management can be used by unauthenticated users, although only authenticated users should be able to use t…EPSS 0.74%9.8CVE-2022-45140Wago 751-9301 firmware missing authentication for critical function vulnerabilityThe configuration backend allows an unauthenticated user to write arbitrary data with root privileges to the storage, which could lead to unauthentic…EPSS 1.1%9.8CVE-2019-5082Wago pfc200 firmware out-of-bounds write vulnerabilityAn exploitable heap buffer overflow vulnerability exists in the iocheckd service I/O-Check functionality of WAGO PFC200 Firmware version 03.01.07(13)…EPSS 3.3%9.8CVE-2018-5459Wago pfc200 firmware improper authentication vulnerabilityAn Improper Authentication issue was discovered in WAGO PFC200 Series 3S CoDeSys Runtime versions 2.3.X and 2.4.X. An attacker can execute different …EPSS 2.7%9.1CVE-2019-5160Wago pfc200 firmware vulnerabilityAn exploitable improper host validation vulnerability exists in the Cloud Connectivity functionality of WAGO PFC200 Firmware versions 03.02.02(14), 0…EPSS 2.7%9.1CVE-2019-5161Wago pfc200 firmware insufficient verification of data authenticity vulnerabilityAn exploitable remote code execution vulnerability exists in the Cloud Connectivity functionality of WAGO PFC200 versions 03.02.02(14), 03.01.07(13),…EPSS 2.5%7.8CVE-2019-5184Wago pfc200 firmware double free vulnerabilityAn exploitable double free vulnerability exists in the iocheckd service "I/O-Check" functionality of WAGO PFC 200. A specially crafted XML cache file…EPSS 0.85%

Source: NIST National Vulnerability Database (record CVE-2016-9362), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.