CVE-2019-5135

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-03-11 · updated 2026-06-17
Weakness: CWE-327

Description

An exploitable timing discrepancy vulnerability exists in the authentication functionality of the Web-Based Management (WBM) web application on WAGO PFC100/200 controllers. The WBM application makes use of the PHP crypt() function which can be exploited to disclose hashed user credentials. This affects WAGO PFC200 Firmware version 03.00.39(12) and version 03.01.07(13), and WAGO PFC100 Firmware version 03.00.39(12).

Affected products

WAGO Pfc100 Firmware: 03.00.39(12)
WAGO PFC200: 03.00.39(12), 03.01.07(13)

References

https://talosintelligence.com/vulnerability_reports/TALOS-2019-0924
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0924

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