Publication Date:
Last Update:
Current Version: V1.1
CVSS v3.1 Base Score: 10.0
Affected Product and Versions Remediation

All versions < V3.3.46

All versions < V3.3.46

All versions < V3.3.46

All versions < V3.3.46

All versions < V3.3.46

All versions >= V2.0

All versions < V3.0.22

All versions >= V2.0

All versions >= V2.0

All versions >= V2.0

All versions >= V2.0

All versions < V3.3.46

All versions < V3.0.22

All versions < V3.3.46

All versions < V3.3.46
  • Make sure to configure the CP to only connect to trusted SINEMA Remote Connect Server instances
  • Block access to port 5243/udp e.g. with an external firewall if possible
  • Disable the SINEMA Remote Connect Server (SRCS) VPN feature

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 10.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C
CWE CWE-122: Heap-based Buffer Overflow
CVSS v3.1 Base Score 8.4
CVSS Vector CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C
CWE CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
CVSS v3.1 Base Score 7.6
CVSS Vector CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C
CWE CWE-94: Improper Control of Generation of Code ('Code Injection')

https://www.siemens.com/cert/advisories

V1.0 (2022-07-12): Publication Date
V1.1 (2022-08-09): Added fix for SIMATIC CP 1242-7 V2, CP 1243-7, CP 1243-1, CP 1243-8