Critical severity · published Jul 11, 2023
CVE-2023-29131
A vulnerability has been identified in SIMATIC CN 4100 (All versions < V2.5)
10.0
CVSS
0.4%
EPSS
No
On KEV
Description
A vulnerability has been identified in SIMATIC CN 4100 (All versions < V2.5). Affected device consists of an incorrect default value in the SSH configuration. This could allow an attacker to bypass network isolation.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SC
Simatic CN 4100 Firmware · Siemens
before 2.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-29131
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-29131
Patch
https://cert-portal.siemens.com/productcert/pdf/ssa-313488.pdf
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