Critical severity · published Jan 9, 2024
CVE-2023-49621
A vulnerability has been identified in SIMATIC CN 4100 (All versions < V2.7)
9.8
CVSS
0.6%
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 uses default credential with admin privileges. An attacker could use the credentials to gain complete control of the affected device.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SC
SIMATIC CN 4100 · Siemens
All versions < V2.7 · source: vendor
SC
Simatic CN 4100 Firmware · Siemens
before 2.7 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-49621
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-49621
Patch
https://cert-portal.siemens.com/productcert/pdf/ssa-777015.pdf
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