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CVE

CVE-2021-34578

This vulnerability allows an attacker who has access to the WBM to read and write settings-parameters of the device by s

This vulnerability allows an attacker who has access to the WBM to read and write settings-parameters of the device by sending specifically constructed requests without authentication on multiple WAGO PLCs in firmware versions up to FW07.

CRITICAL · CVSS 9.8 EPSS 0.00336
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-287Improper Authentication
▤

Affected Products & Versions

12
wago 750-890\/040-000 firmware<= fw07
wago 750-890\/025-001 firmware<= fw07
wago 750-890\/025-002 firmware<= fw07
wago 750-890\/025-000 firmware<= fw07
wago 750-832\/000-002 firmware<= fw07
wago 750-362 firmware<= fw07
wago 750-823 firmware<= fw07
wago 750-832 firmware<= fw07
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · info@cert.vde.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD31 Aug 2021 · 11:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://cert.vde.com/en-us/advisories/vde-2020-044Third Party Advisory
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