High severity · published Jan 9, 2024
CVE-2023-49251
A vulnerability has been identified in SIMATIC CN 4100 (All versions < V2.7)
8.8
CVSS
0.5%
EPSS
No
On KEV
Description
A vulnerability has been identified in SIMATIC CN 4100 (All versions < V2.7). The "intermediate installation" system state of the affected application allows an attacker to add their own login credentials to the device. This allows an attacker to remotely login as root and take control of the device even after the affected device is fully set up.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% 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 2.7 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-49251
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-49251
Patch
https://cert-portal.siemens.com/productcert/pdf/ssa-777015.pdf
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