CVE-2020-12506

Name: CVE-2020-12506
Creator: NVD / NIST
Published: 2020-09-30T16:15:12.777+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 1.45%

Last modified Jun 17, 2026

CVE-2020-12506 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. Improper Authentication vulnerability in WAGO 750-8XX series with FW version <= FW03 allows an attacker to change the settings of the devices by sending specifically constructed requests without authentication This issue affects: WAGO 750-362, WAGO 750-363, WAGO 750-823, WAGO 750-832/xxx-xxx, WAGO 750-862, WAGO 750-891, WAGO 750-890/xxx-xxx in versions FW03 and prior versions.. EPSS estimates a 1.45% chance of exploitation in the next 30 days.

Description

Improper Authentication vulnerability in WAGO 750-8XX series with FW version <= FW03 allows an attacker to change the settings of the devices by sending specifically constructed requests without authentication This issue affects: WAGO 750-362, WAGO 750-363, WAGO 750-823, WAGO 750-832/xxx-xxx, WAGO 750-862, WAGO 750-891, WAGO 750-890/xxx-xxx in versions FW03 and prior versions.

Metrics

CVSS 3.1

9.1/10

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

EPSS Probability

1.45%

70.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Wago	750-362 Firmware	<= fw03
Wago	750-363 Firmware	<= fw03
Wago	750-823 Firmware	<= fw03
Wago	750-832 Firmware	<= fw03
Wago	750-862 Firmware	<= fw03
Wago	750-891 Firmware	<= fw03
Wago	750-890 Firmware	<= fw03

References

https://cert.vde.com/en-us/advisories/vde-2020-028Third Party Advisory
https://cert.vde.com/en-us/advisories/vde-2020-028Third Party Advisory

Timeline

Published: Sep 30, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-12506?

How severe is CVE-2020-12506?

CVE-2020-12506 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 1.45% probability of exploitation in the next 30 days.

How do I fix CVE-2020-12506?

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-2020-12506?

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

Scan your code now

Source: NVD / NIST