CVE-2019-5135

Name: CVE-2019-5135
Creator: NVD / NIST
Published: 2020-03-11T22:27:40.253+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.02%

Last modified Jun 17, 2026

CVE-2019-5135 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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. EPSS estimates a 1.02% chance of exploitation in the next 30 days.

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).

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS Probability

1.02%

59.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-327

Affected Software

Vendor	Product	Versions
Wago	Pfc200 Firmware	03.00.39\(12\)
Wago	Pfc200 Firmware	03.01.07\(13\)
Wago	Pfc100 Firmware	03.00.39\(12\)

References

https://talosintelligence.com/vulnerability_reports/TALOS-2019-0924Exploit, Mitigation, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0924Exploit, Mitigation, Third Party Advisory

Timeline

Published: Mar 11, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-5135?

How severe is CVE-2019-5135?

CVE-2019-5135 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.02% probability of exploitation in the next 30 days.

How do I fix CVE-2019-5135?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-5135?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST