ICSA-24-011-09: Siemens SIMATIC CN 4100
CISA advisory · released 2024-01-09
Source record Collected from CISA's CSAF advisory feed
- Distribution label in the document: TLP:WHITE
- Revision 1, 2024-01-09 (final)
CISA's summary
Summary: SIMATIC CN 4100 is vulnerable to authorization bypass through user-controlled key, use of default credentials and unauthenticated IP address change that could allow an attacker to remotely login as root or cause denial of service condition of the device. Siemens has released a new version for SIMATIC CN 4100 and recommends to update to the latest version.
Products, as the advisory lists them
| Vendor | Product | Version |
|---|---|---|
| Siemens | SIMATIC CN 4100 | <V2.7 |
DeSpy has not checked any unit, hardware revision or firmware.
Vulnerabilities in this advisory
- CVE-2023-49251 — CVE-2023-49251 · CWE-639
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.
- CVE-2023-49252 — CVE-2023-49252 · CWE-20
The affected application allows IP configuration change without authentication to the device. This could allow an attacker to cause denial of service condition.
- CVE-2023-49621 — CVE-2023-49621 · CWE-1392
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.
Acknowledgments, as the advisory lists them
- Siemens ProductCERT: reporting these vulnerabilities to CISA.
The advisory's legal notice
Siemens Security Advisories are subject to the terms and conditions contained in Siemens' underlying license terms or other applicable agreements previously agreed to with Siemens (hereinafter "License Terms"). To the extent applicable to information, software or documentation made available in or through a Siemens Security Advisory, the Terms of Use of Siemens' Global Website (https://www.siemens.com/terms_of_use, hereinafter "Terms of Use"), in particular Sections 8-10 of the Terms of Use, shall apply additionally. In case of conflicts, the License Terms shall prevail over the Terms of Use.
Sources
DeSpy's copy of this version is dated 2026-09-28.
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