CVE-2019-5135

What it is

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).

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

1.0% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2020-03-11 22:27 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 02:37 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 1.0% in the next 30 days (EPSS).
• Severity: 5.3 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2020-03-11 22:27 UTC

Last modified

2026-06-17 02:37 UTC

Exploit probability

1.0% · EPSS, next 30 days

Weakness

CWE-327 · Broken cryptographic algorithm

Record status

Modified

Affected

• Wago pfc200 Firmware 03.00.39\(12\)
• Wago pfc200 Firmware 03.01.07\(13\)
• Wago pfc100 Firmware 03.00.39\(12\)

Attack profile CVSS 3.1 · 5.3

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Is it in your code?

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