CVE-2020-12505

Name: CVE-2020-12505
Creator: NVD / NIST
Published: 2020-09-30T16:15:12.67+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.2/10EPSS 1.25%

Last modified Jun 17, 2026

CVE-2020-12505 is a high-severity vulnerability rated 8.2/10 on the CVSS scale. Improper Authentication vulnerability in WAGO 750-8XX series with FW version <= FW07 allows an attacker to change some special parameters without authentication. This issue affects: WAGO 750-852, WAGO 750-880/xxx-xxx, WAGO 750-881, WAGO 750-831/xxx-xxx, WAGO 750-882, WAGO 750-885/xxx-xxx, WAGO 750-889 in versions FW07 and below.. EPSS estimates a 1.25% chance of exploitation in the next 30 days.

Description

Improper Authentication vulnerability in WAGO 750-8XX series with FW version <= FW07 allows an attacker to change some special parameters without authentication. This issue affects: WAGO 750-852, WAGO 750-880/xxx-xxx, WAGO 750-881, WAGO 750-831/xxx-xxx, WAGO 750-882, WAGO 750-885/xxx-xxx, WAGO 750-889 in versions FW07 and below.

Metrics

CVSS 3.1

8.2/10

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

EPSS Probability

1.25%

65.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Wago	750-852 Firmware	<= fw07
Wago	750-880 Firmware	<= fw07
Wago	750-881 Firmware	<= fw07
Wago	750-831 Firmware	<= fw07
Wago	750-882 Firmware	<= fw07
Wago	750-885 Firmware	<= fw07
Wago	750-889 Firmware	<= fw07

References

https://cert.vde.com/en-us/advisories/vde-2020-027Third Party Advisory
https://cert.vde.com/en-us/advisories/vde-2020-027Third Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2020-12505?

How severe is CVE-2020-12505?

CVE-2020-12505 has a CVSS score of 8.2/10 (HIGH severity). The EPSS model estimates a 1.25% probability of exploitation in the next 30 days.

How do I fix CVE-2020-12505?

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-2020-12505?

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

Scan your code now

Source: NVD / NIST