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Current Version: | V1.2 |
CVSS v3.1 Base Score: | 4.6 |
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Siemens has identified the following specific workarounds and mitigations that customers can apply to reduce the risk:
Please follow the General Security Recommendations.
As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity
The vulnerability classification has been performed by using the CVSS scoring system in version 3.1 (CVSS v3.1) (https://www.first.org/cvss/). The CVSS environmental score is specific to the customer’s environment and will impact the overall CVSS score. The environmental score should therefore be individually defined by the customer to accomplish final scoring.
An additional classification has been performed using the CWE classification, a community-developed list of common software security weaknesses. This serves as a common language and as a baseline for weakness identification, mitigation, and prevention efforts. A detailed list of CWE classes can be found at: https://cwe.mitre.org/.
CVSS v3.1 Base Score | 4.6 |
CVSS Vector | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:P/RL:T/RC:C |
CWE | CWE-1326: Missing Immutable Root of Trust in Hardware |
Siemens has released the following new hardware versions of the S7-1500 product family. They contain a new secure boot mechanism that resolves the vulnerability:
Siemens is working on new hardware versions for additional PLC types to address this vulnerability further.
For more information please also refer to the related product support article: https://support.industry.siemens.com/cs/ww/en/view/109816536/.
V1.0 (2023-01-10): | Publication Date |
V1.1 (2023-02-14): | Added information about additional new S7-1500 hardware versions and a reference to the related product support title |
V1.2 (2023-03-14): | Added information about additional new S7-1500 hardware versions: SIMATIC S7-1500 CPU 1514SP( F)-2 PN |