CVE-2020-12505

WAGO: Vulnerability in web-based authentication in WAGO 750-8XX Version <= FW07

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.

Remediation

Solution:

  • Upgrade devices to the latest standard firmware (> FW07).

Workaround:

  • Restrict network access to the device. Do not directly connect the device to the internet. Disable unused TCP/UDP ports. Disable web-based management ports 80/443 after the configuration phase

Category

8.2
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.32%
Third-Party Advisory vde.com
Affected: WAGO 750-852
Affected: WAGO 750-880/xxx-xxx
Affected: WAGO 750-881
Affected: WAGO 750-831/xxx-xxx
Affected: WAGO 750-882
Affected: WAGO 750-885/xxx-xxx
Affected: WAGO 750-889
Published at:
Updated at:

References

Link Tags
https://cert.vde.com/en-us/advisories/vde-2020-027 third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-12505?
CVE-2020-12505 has been scored as a high severity vulnerability.
How to fix CVE-2020-12505?
To fix CVE-2020-12505: Upgrade devices to the latest standard firmware (> FW07).
Is CVE-2020-12505 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-12505 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-12505?
CVE-2020-12505 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.
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