High severity · published Nov 9, 2022
CVE-2021-34567
In WAGO I/O-Check Service in multiple products an unauthenticated remote attacker can send a specially crafted packet containing OS commands to provoke a denial of service and an…
8.2
CVSS
0.9%
EPSS
No
On KEV
Description
In WAGO I/O-Check Service in multiple products an unauthenticated remote attacker can send a specially crafted packet containing OS commands to provoke a denial of service and an limited out-of-bounds read.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 58% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
7F
750-8100 Firmware · Wago
before 18; 18; 18; 18 · source: NVD
7F
750-8101 Firmware · Wago
before 18; 18; 18; 18 · source: NVD
7F
750-8101/025-000 Firmware · Wago
before 18; 18; 18; 18 · source: NVD
7F
750-8102 Firmware · Wago
before 18; 18; 18; 18 · source: NVD
7F
750-8102/025-000 Firmware · Wago
before 18; 18; 18; 18 · source: NVD
7F
750-8202 Firmware · Wago
before 18; 18; 18; 18 · source: NVD
7F
750-8202/000-011 Firmware · Wago
before 18; 18; 18; 18 · source: NVD
7F
750-8202/000-012 Firmware · Wago
before 18; 18; 18; 18 · source: NVD
7F
750-8202/000-022 Firmware · Wago
before 18; 18; 18; 18 · source: NVD
7F
750-8202/025-000 Firmware · Wago
before 18; 18; 18; 18 · source: NVD
7F
750-8202/025-001 Firmware · Wago
before 18; 18; 18; 18 · source: NVD
7F
750-8202/025-002 Firmware · Wago
before 18; 18; 18; 18 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-34567
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-34567
Vendor Advisory
https://cert.vde.com/en/advisories/VDE-2020-036/
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