PT-2021-20559 · Wago · Wago Plcs

Maxim Rupp · Published 2021-08-31 · Updated 2021-09-08 · CVE-2021-34578

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions: WAGO PLCs versions up to FW07

Description: This issue allows an attacker with access to the WBM to read and write device settings-parameters by sending specifically constructed requests without authentication.

Recommendations: For versions up to FW07, consider restricting access to the WBM to minimize the risk of exploitation until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

CVE-2021-34578

Affected Products

Wago Plcs

References · 5

• https://osv.dev/vulnerability/CVE-2021-34578 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-34578 · Security Note
• https://t.me/cibsecurity/28064 · Telegram Post
• https://cert.vde.com/en-us/advisories/vde-2020-044 · Note
• https://t.me/cvenotify/20429 · Telegram Post