High severity · published Aug 31, 2021
CVE-2021-34578
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…
8.1
CVSS
1%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 61% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
7F
750-362 Firmware · Wago
through fw07 · source: NVD
7F
750-363 Firmware · Wago
through fw07 · source: NVD
7F
750-823 Firmware · Wago
through fw07 · source: NVD
7F
750-832 Firmware · Wago
through fw07 · source: NVD
7F
750-832/000-002 Firmware · Wago
through fw07 · source: NVD
7F
750-862 Firmware · Wago
through fw07 · source: NVD
7F
750-890/025-000 Firmware · Wago
through fw07 · source: NVD
7F
750-890/025-001 Firmware · Wago
through fw07 · source: NVD
7F
750-890/025-002 Firmware · Wago
through fw07 · source: NVD
7F
750-890/040-000 Firmware · Wago
through fw07 · source: NVD
7F
750-891 Firmware · Wago
through fw07 · source: NVD
7F
750-893 Firmware · Wago
through fw07 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-34578
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-34578
Third Party Advisory
https://cert.vde.com/en-us/advisories/vde-2020-044
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