Is CVE-2019-5149 actively exploited?

No active exploitation of CVE-2019-5149 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-5149 be exploited remotely?

Yes. CVE-2019-5149 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2019-5149?

CVE-2019-5149 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2019-5149

CWE-400Published: March 11, 2020· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

The WBM web application on firmwares prior to 03.02.02 and 03.01.07 on the WAGO PFC100 and PFC2000, respectively, runs on a lighttpd web server and makes use of the FastCGI module, which is intended to provide high performance for all Internet applications without the penalties of Web server APIs. However, the default configuration of this module appears to limit the number of concurrent php-cgi processes to two, which can be abused to cause a denial of service of the entire web server. 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) and version 03.02.02(14).

NVD Source

Technical Analysis

CVE-2019-5149 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.