Siemens SIMATIC  – All CISA Advisories

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens’ ProductCERT Security Advisories (CERT Services | Services | Siemens Global).

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1. EXECUTIVE SUMMARY

• CVSS v4 6.9
• ATTENTION: Exploitable remotely/low attack complexity
• Vendor: Siemens
• Equipment: SIMATIC
• Vulnerability: Observable Discrepancy

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an unauthenticated remote attacker to identify valid usernames.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

Siemens reports the following SIMATIC products are affected:

• Siemens SIMATIC S7-1200 CPU 1217C DC/DC/DC (6ES7217-1AG40-0XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1513R-1 PN (6ES7513-1RM03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1500 CPU 1513pro-2 PN (6ES7513-2PM03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP (6AG1518-4AP00-4AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1500 CPU 1517H-3 PN (6ES7517-3HP00-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1200 CPU 1214FC DC/DC/Rly (6ES7214-1HF40-0XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1200 CPU 1215C DC/DC/Rly (6ES7215-1HG40-0XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1517F-3 PN/DP (6ES7517-3FP00-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIPLUS S7-1200 CPU 1212 DC/DC/RLY (6AG1212-1HE40-4XB0): vers:all/<V4.7
• Siemens SIPLUS S7-1200 CPU 1214 DC/DC/RLY (6AG1214-1HG40-2XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1510SP F-1 PN (6ES7510-1SK03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1200 CPU 1212FC DC/DC/DC (6ES7212-1AF40-0XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1200 CPU 1215C DC/DC/DC (6ES7215-1AG40-0XB0): vers:all/<V4.7
• Siemens SIMATIC Drive Controller CPU 1507D TF (6ES7615-7DF10-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIPLUS S7-1200 CPU 1215 DC/DC/DC (6AG1215-1AG40-4XB0): vers:all/<V4.7
• Siemens SIPLUS S7-1500 CPU 1517H-3 PN (6AG1517-3HP00-4AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1200 CPU 1211C AC/DC/Rly (6ES7211-1BE40-0XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1516F-3 PN/DP (6ES7516-3FP03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP (6ES7518-4AP00-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1500 CPU 1511C-1 PN (6ES7511-1CL03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1500 CPU 1512SP-1 PN (6ES7512-1DM03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIPLUS S7-1200 CPU 1212 DC/DC/RLY (6AG1212-1HE40-2XB0): vers:all/<V4.7
• Siemens SIPLUS S7-1200 CPU 1215C DC/DC/DC (6AG1215-1AG40-5XB0): vers:all/<V4.7
• Siemens SIPLUS S7-1200 CPU 1215 DC/DC/DC (6AG1215-1AG40-2XB0): vers:all/<V4.7
• Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants): vers:all/>=V30.1.0
• Siemens SIMATIC S7-1500 CPU 1511-1 PN (6ES7511-1AL03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1500 CPU 1515TF-2 PN (6ES7515-2UN03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIPLUS S7-1200 CPU 1212C DC/DC/DC (6AG1212-1AE40-4XB0): vers:all/<V4.7
• Siemens SIPLUS S7-1200 CPU 1212C DC/DC/DC (6AG1212-1AE40-2XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1516pro-2 PN (6ES7516-2PP03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIPLUS S7-1200 CPU 1215 DC/DC/RLY (6AG1215-1HG40-2XB0): vers:all/<V4.7
• Siemens SIPLUS S7-1200 CPU 1215 DC/DC/RLY (6AG1215-1HG40-4XB0): vers:all/<V4.7
• Siemens SIPLUS S7-1200 CPU 1212C DC/DC/DC RAIL (6AG2212-1AE40-1XB0): vers:all/<V4.7
• Siemens SIPLUS S7-1200 CPU 1214 DC/DC/DC (6AG1214-1AG40-2XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1510SP-1 PN (6ES7510-1DK03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1500 CPU 1518T-4 PN/DP (6ES7518-4TP00-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1500 CPU 1513F-1 PN (6ES7513-1FM03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIPLUS S7-1200 CPU 1215 DC/DC/RLY (6AG1215-1HG40-5XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1513pro F-2 PN (6ES7513-2GM03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1200 CPU 1212C DC/DC/DC (6ES7212-1AE40-0XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1200 CPU 1214C AC/DC/Rly (6ES7214-1BG40-0XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1514SP F-2 PN (6ES7514-2SN03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIPLUS S7-1200 CPU 1214C DC/DC/DC RAIL (6AG2214-1AG40-1XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1514SPT-2 PN (6ES7514-2VN03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIPLUS S7-1200 CPU 1215 AC/DC/RLY (6AG1215-1BG40-5XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1514SPT F-2 PN (6ES7514-2WN03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIPLUS S7-1200 CPU 1214 DC/DC/RLY (6AG1214-1HG40-5XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1200 CPU 1212FC DC/DC/Rly (6ES7212-1HF40-0XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIPLUS S7-1200 CPU 1214FC DC/DC/DC (6AG1214-1AF40-5XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1511TF-1 PN (6ES7511-1UL03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIPLUS S7-1200 CPU 1214 DC/DC/DC (6AG1214-1AG40-5XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1200 CPU 1214C DC/DC/Rly (6ES7214-1HG40-0XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1200 CPU 1211C DC/DC/Rly (6ES7211-1HE40-0XB0): vers:all/<V4.7
• Siemens SIPLUS S7-1200 CPU 1214 AC/DC/RLY (6AG1214-1BG40-5XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1517-3 PN/DP (6ES7517-3AP00-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIPLUS S7-1200 CPU 1212 AC/DC/RLY (6AG1212-1BE40-2XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1200 CPU 1212C AC/DC/Rly (6ES7212-1BE40-0XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1517TF-3 PN/DP (6ES7517-3UP00-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIPLUS S7-1200 CPU 1215FC DC/DC/DC (6AG1215-1AF40-5XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1200 CPU 1214FC DC/DC/DC (6ES7214-1AF40-0XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1517F-3 PN/DP (6ES7517-3FP01-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1500 CPU 1514SP-2 PN (6ES7514-2DN03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1200 CPU 1215C AC/DC/Rly (6ES7215-1BG40-0XB0): vers:all/<V4.7
• Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP (6ES7518-4FP00-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1500 CPU 1517T-3 PN/DP (6ES7517-3TP00-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIPLUS S7-1200 CPU 1214 AC/DC/RLY (6AG1214-1BG40-2XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1511T-1 PN (6ES7511-1TL03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIPLUS S7-1200 CPU 1215 AC/DC/RLY (6AG1215-1BG40-4XB0): vers:all/<V4.7
• Siemens SIMATIC S7-PLCSIM Advanced: vers:all/>=V6.0|<V7.0
• Siemens SIPLUS S7-1200 CPU 1214 DC/DC/DC (6AG1214-1AG40-4XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1512SP F-1 PN (6ES7512-1SM03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1500 CPU 1511F-1 PN (6ES7511-1FL03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1500 CPU 1513-1 PN (6ES7513-1AM03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1500 CPU 1512C-1 PN (6ES7512-1CM03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC Drive Controller CPU 1504D TF (6ES7615-4DF10-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1500 CPU 1515F-2 PN (6ES7515-2FN03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1200 CPU 1215FC DC/DC/DC (6ES7215-1AF40-0XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1518TF-4 PN/DP (6ES7518-4UP00-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIPLUS S7-1200 CPU 1212 AC/DC/RLY (6AG1212-1BE40-4XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1515R-2 PN (6ES7515-2RN03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIPLUS S7-1500 CPU 1518HF-4 PN (6AG1518-4JP00-4AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1200 CPU 1215FC DC/DC/Rly (6ES7215-1HF40-0XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1516TF-3 PN/DP (6ES7516-3UN00-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIPLUS S7-1200 CPU 1214FC DC/DC/RLY (6AG1214-1HF40-5XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1515T-2 PN (6ES7515-2TN03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIPLUS S7-1200 CPU 1214 DC/DC/RLY (6AG1214-1HG40-4XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1515-2 PN (6ES7515-2AN03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIPLUS S7-1200 CPU 1215 AC/DC/RLY (6AG1215-1BG40-2XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1200 CPU 1211C DC/DC/DC (6ES7211-1AE40-0XB0): vers:all/<V4.7
• Siemens SIPLUS S7-1500 CPU 1518F-4 PN/DP (6AG1518-4FP00-4AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1200 CPU 1212C DC/DC/Rly (6ES7212-1HE40-0XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1500 CPU 1516-3 PN/DP (6ES7516-3AP03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIPLUS S7-1200 CPU 1214 AC/DC/RLY (6AG1214-1BG40-4XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1518HF-4 PN (6ES7518-4JP00-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1200 CPU 1214C DC/DC/DC (6ES7214-1AG40-0XB0): vers:all/<V4.7
• Siemens SIMATIC S7-1500 CPU 1516pro F-2 PN (6ES7516-2GP03-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1500 CPU 1516T-3 PN/DP (6ES7516-3TN00-0AB0): vers:all/>=V3.1.0|<V3.1.2
• Siemens SIMATIC S7-1500 Software Controller: vers:all/>=V30.1.0

3.2 VULNERABILITY OVERVIEW

3.2.1 OBSERVABLE DISCREPANCY CWE-203

The login functionality of the web server in affected devices does not normalize the response times of login attempts. An unauthenticated remote attacker could exploit this side-channel information to distinguish between valid and invalid usernames.

CVE-2023-37482 has been assigned to this vulnerability. A CVSS v3 base score of 5.3 has been calculated; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

A CVSS v4 score has also been calculated for CVE-2023-37482. A base score of 6.9 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N).

3.3 BACKGROUND

• CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
• COUNTRIES/AREAS DEPLOYED: Worldwide
• COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

David Henrique Estevam de Andrade reported this vulnerability to Siemens.
Siemens then reported this vulnerability to CISA.

4. MITIGATIONS

Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk:

• SIMATIC Drive Controller CPU 1504D TF (6ES7615-4DF10-0AB0), SIMATIC Drive Controller CPU 1507D TF (6ES7615-7DF10-0AB0), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants), SIMATIC S7-1500 CPU 1510SP F-1 PN (6ES7510-1SK03-0AB0), SIMATIC S7-1500 CPU 1510SP-1 PN (6ES7510-1DK03-0AB0), SIMATIC S7-1500 CPU 1511-1 PN (6ES7511-1AL03-0AB0), SIMATIC S7-1500 CPU 1511C-1 PN (6ES7511-1CL03-0AB0), SIMATIC S7-1500 CPU 1511F-1 PN (6ES7511-1FL03-0AB0), SIMATIC S7-1500 CPU 1511T-1 PN (6ES7511-1TL03-0AB0), SIMATIC S7-1500 CPU 1511TF-1 PN (6ES7511-1UL03-0AB0), SIMATIC S7-1500 CPU 1512C-1 PN (6ES7512-1CM03-0AB0), SIMATIC S7-1500 CPU 1512SP F-1 PN (6ES7512-1SM03-0AB0), SIMATIC S7-1500 CPU 1512SP-1 PN (6ES7512-1DM03-0AB0), SIMATIC S7-1500 CPU 1513-1 PN (6ES7513-1AM03-0AB0), SIMATIC S7-1500 CPU 1513F-1 PN (6ES7513-1FM03-0AB0), SIMATIC S7-1500 CPU 1513pro F-2 PN (6ES7513-2GM03-0AB0), SIMATIC S7-1500 CPU 1513pro-2 PN (6ES7513-2PM03-0AB0), SIMATIC S7-1500 CPU 1513R-1 PN (6ES7513-1RM03-0AB0), SIMATIC S7-1500 CPU 1514SP F-2 PN (6ES7514-2SN03-0AB0), SIMATIC S7-1500 CPU 1514SP-2 PN (6ES7514-2DN03-0AB0), SIMATIC S7-1500 CPU 1514SPT F-2 PN (6ES7514-2WN03-0AB0), SIMATIC S7-1500 CPU 1514SPT-2 PN (6ES7514-2VN03-0AB0), SIMATIC S7-1500 CPU 1515-2 PN (6ES7515-2AN03-0AB0), SIMATIC S7-1500 CPU 1515F-2 PN (6ES7515-2FN03-0AB0), SIMATIC S7-1500 CPU 1515R-2 PN (6ES7515-2RN03-0AB0), SIMATIC S7-1500 CPU 1515T-2 PN (6ES7515-2TN03-0AB0), SIMATIC S7-1500 CPU 1515TF-2 PN (6ES7515-2UN03-0AB0), SIMATIC S7-1500 CPU 1516-3 PN/DP (6ES7516-3AP03-0AB0), SIMATIC S7-1500 CPU 1516F-3 PN/DP (6ES7516-3FP03-0AB0), SIMATIC S7-1500 CPU 1516pro F-2 PN (6ES7516-2GP03-0AB0), SIMATIC S7-1500 CPU 1516pro-2 PN (6ES7516-2PP03-0AB0), SIMATIC S7-1500 CPU 1516T-3 PN/DP (6ES7516-3TN00-0AB0), SIMATIC S7-1500 CPU 1516TF-3 PN/DP (6ES7516-3UN00-0AB0), SIMATIC S7-1500 CPU 1517-3 PN/DP (6ES7517-3AP00-0AB0), SIMATIC S7-1500 CPU 1517F-3 PN/DP (6ES7517-3FP00-0AB0), SIMATIC S7-1500 CPU 1517F-3 PN/DP (6ES7517-3FP01-0AB0), SIMATIC S7-1500 CPU 1517H-3 PN (6ES7517-3HP00-0AB0), SIMATIC S7-1500 CPU 1517T-3 PN/DP (6ES7517-3TP00-0AB0), SIMATIC S7-1500 CPU 1517TF-3 PN/DP (6ES7517-3UP00-0AB0), SIMATIC S7-1500 CPU 1518-4 PN/DP (6ES7518-4AP00-0AB0), SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0), SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0), SIMATIC S7-1500 CPU 1518F-4 PN/DP (6ES7518-4FP00-0AB0), SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0), SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0), SIMATIC S7-1500 CPU 1518HF-4 PN (6ES7518-4JP00-0AB0), SIMATIC S7-1500 CPU 1518T-4 PN/DP (6ES7518-4TP00-0AB0), SIMATIC S7-1500 CPU 1518TF-4 PN/DP (6ES7518-4UP00-0AB0), SIMATIC S7-1500 Software Controller, SIMATIC S7-PLCSIM Advanced, SIPLUS S7-1500 CPU 1517H-3 PN (6AG1517-3HP00-4AB0), SIPLUS S7-1500 CPU 1518-4 PN/DP (6AG1518-4AP00-4AB0), SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0), SIPLUS S7-1500 CPU 1518F-4 PN/DP (6AG1518-4FP00-4AB0), SIPLUS S7-1500 CPU 1518HF-4 PN (6AG1518-4JP00-4AB0): Disable HTTP (Port 80/tcp) and provide web service access through HTTPS (Port 443/tcp) only; the vulnerability is considered as only exploitable via HTTP.
• SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants), SIMATIC S7-1500 Software Controller: Currently no fix is available.
• SIMATIC S7-1500 CPU 1510SP F-1 PN (6ES7510-1SK03-0AB0), SIMATIC S7-1500 CPU 1510SP-1 PN (6ES7510-1DK03-0AB0), SIMATIC S7-1500 CPU 1511-1 PN (6ES7511-1AL03-0AB0), SIMATIC S7-1500 CPU 1511C-1 PN (6ES7511-1CL03-0AB0), SIMATIC S7-1500 CPU 1511F-1 PN (6ES7511-1FL03-0AB0), SIMATIC S7-1500 CPU 1511T-1 PN (6ES7511-1TL03-0AB0), SIMATIC S7-1500 CPU 1511TF-1 PN (6ES7511-1UL03-0AB0), SIMATIC S7-1500 CPU 1512C-1 PN (6ES7512-1CM03-0AB0), SIMATIC S7-1500 CPU 1512SP F-1 PN (6ES7512-1SM03-0AB0), SIMATIC S7-1500 CPU 1512SP-1 PN (6ES7512-1DM03-0AB0), SIMATIC S7-1500 CPU 1513-1 PN (6ES7513-1AM03-0AB0), SIMATIC S7-1500 CPU 1513F-1 PN (6ES7513-1FM03-0AB0), SIMATIC S7-1500 CPU 1513pro F-2 PN (6ES7513-2GM03-0AB0), SIMATIC S7-1500 CPU 1513pro-2 PN (6ES7513-2PM03-0AB0), SIMATIC S7-1500 CPU 1513R-1 PN (6ES7513-1RM03-0AB0), SIMATIC S7-1500 CPU 1514SP F-2 PN (6ES7514-2SN03-0AB0), SIMATIC S7-1500 CPU 1514SP-2 PN (6ES7514-2DN03-0AB0), SIMATIC S7-1500 CPU 1514SPT F-2 PN (6ES7514-2WN03-0AB0), SIMATIC S7-1500 CPU 1514SPT-2 PN (6ES7514-2VN03-0AB0), SIMATIC S7-1500 CPU 1515-2 PN (6ES7515-2AN03-0AB0), SIMATIC S7-1500 CPU 1515F-2 PN (6ES7515-2FN03-0AB0), SIMATIC S7-1500 CPU 1515R-2 PN (6ES7515-2RN03-0AB0), SIMATIC S7-1500 CPU 1515T-2 PN (6ES7515-2TN03-0AB0), SIMATIC S7-1500 CPU 1515TF-2 PN (6ES7515-2UN03-0AB0), SIMATIC S7-1500 CPU 1516-3 PN/DP (6ES7516-3AP03-0AB0), SIMATIC S7-1500 CPU 1516F-3 PN/DP (6ES7516-3FP03-0AB0), SIMATIC S7-1500 CPU 1516pro F-2 PN (6ES7516-2GP03-0AB0), SIMATIC S7-1500 CPU 1516pro-2 PN (6ES7516-2PP03-0AB0), SIMATIC S7-1500 CPU 1516T-3 PN/DP (6ES7516-3TN00-0AB0), SIMATIC S7-1500 CPU 1516TF-3 PN/DP (6ES7516-3UN00-0AB0), SIMATIC S7-1500 CPU 1517-3 PN/DP (6ES7517-3AP00-0AB0), SIMATIC S7-1500 CPU 1517F-3 PN/DP (6ES7517-3FP00-0AB0), SIMATIC S7-1500 CPU 1517F-3 PN/DP (6ES7517-3FP01-0AB0), SIMATIC S7-1500 CPU 1517H-3 PN (6ES7517-3HP00-0AB0), SIMATIC S7-1500 CPU 1517T-3 PN/DP (6ES7517-3TP00-0AB0), SIMATIC S7-1500 CPU 1517TF-3 PN/DP (6ES7517-3UP00-0AB0), SIMATIC S7-1500 CPU 1518-4 PN/DP (6ES7518-4AP00-0AB0), SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0), SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0), SIMATIC S7-1500 CPU 1518F-4 PN/DP (6ES7518-4FP00-0AB0), SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0), SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0), SIMATIC S7-1500 CPU 1518HF-4 PN (6ES7518-4JP00-0AB0), SIMATIC S7-1500 CPU 1518T-4 PN/DP (6ES7518-4TP00-0AB0), SIMATIC S7-1500 CPU 1518TF-4 PN/DP (6ES7518-4UP00-0AB0), SIPLUS S7-1500 CPU 1517H-3 PN (6AG1517-3HP00-4AB0), SIPLUS S7-1500 CPU 1518-4 PN/DP (6AG1518-4AP00-4AB0), SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0), SIPLUS S7-1500 CPU 1518F-4 PN/DP (6AG1518-4FP00-4AB0), SIPLUS S7-1500 CPU 1518HF-4 PN (6AG1518-4JP00-4AB0): Update to V3.1.2 or a later version.
• SIMATIC Drive Controller CPU 1504D TF (6ES7615-4DF10-0AB0), SIMATIC Drive Controller CPU 1507D TF (6ES7615-7DF10-0AB0): Update to V3.1.2 or later version.
• SIPLUS S7-1200 CPU 1212 AC/DC/RLY (6AG1212-1BE40-2XB0), SIPLUS S7-1200 CPU 1212 AC/DC/RLY (6AG1212-1BE40-4XB0), SIPLUS S7-1200 CPU 1212 DC/DC/RLY (6AG1212-1HE40-2XB0), SIPLUS S7-1200 CPU 1212 DC/DC/RLY (6AG1212-1HE40-4XB0), SIPLUS S7-1200 CPU 1212C DC/DC/DC (6AG1212-1AE40-2XB0), SIPLUS S7-1200 CPU 1212C DC/DC/DC (6AG1212-1AE40-4XB0), SIPLUS S7-1200 CPU 1212C DC/DC/DC RAIL (6AG2212-1AE40-1XB0), SIPLUS S7-1200 CPU 1214 AC/DC/RLY (6AG1214-1BG40-2XB0), SIPLUS S7-1200 CPU 1214 AC/DC/RLY (6AG1214-1BG40-4XB0), SIPLUS S7-1200 CPU 1214 AC/DC/RLY (6AG1214-1BG40-5XB0), SIPLUS S7-1200 CPU 1214 DC/DC/DC (6AG1214-1AG40-2XB0), SIPLUS S7-1200 CPU 1214 DC/DC/DC (6AG1214-1AG40-4XB0), SIPLUS S7-1200 CPU 1214 DC/DC/DC (6AG1214-1AG40-5XB0), SIPLUS S7-1200 CPU 1214 DC/DC/RLY (6AG1214-1HG40-2XB0), SIPLUS S7-1200 CPU 1214 DC/DC/RLY (6AG1214-1HG40-4XB0), SIPLUS S7-1200 CPU 1214 DC/DC/RLY (6AG1214-1HG40-5XB0), SIPLUS S7-1200 CPU 1214C DC/DC/DC RAIL (6AG2214-1AG40-1XB0), SIPLUS S7-1200 CPU 1214FC DC/DC/DC (6AG1214-1AF40-5XB0), SIPLUS S7-1200 CPU 1214FC DC/DC/RLY (6AG1214-1HF40-5XB0), SIPLUS S7-1200 CPU 1215 AC/DC/RLY (6AG1215-1BG40-2XB0), SIPLUS S7-1200 CPU 1215 AC/DC/RLY (6AG1215-1BG40-4XB0), SIPLUS S7-1200 CPU 1215 AC/DC/RLY (6AG1215-1BG40-5XB0), SIPLUS S7-1200 CPU 1215 DC/DC/DC (6AG1215-1AG40-2XB0), SIPLUS S7-1200 CPU 1215 DC/DC/DC (6AG1215-1AG40-4XB0), SIPLUS S7-1200 CPU 1215 DC/DC/RLY (6AG1215-1HG40-2XB0), SIPLUS S7-1200 CPU 1215 DC/DC/RLY (6AG1215-1HG40-4XB0), SIPLUS S7-1200 CPU 1215 DC/DC/RLY (6AG1215-1HG40-5XB0), SIPLUS S7-1200 CPU 1215C DC/DC/DC (6AG1215-1AG40-5XB0), SIPLUS S7-1200 CPU 1215FC DC/DC/DC (6AG1215-1AF40-5XB0): Update to V4.7 or a later version.
• SIMATIC S7-1200 CPU 1211C AC/DC/Rly (6ES7211-1BE40-0XB0), SIMATIC S7-1200 CPU 1211C DC/DC/DC (6ES7211-1AE40-0XB0), SIMATIC S7-1200 CPU 1211C DC/DC/Rly (6ES7211-1HE40-0XB0), SIMATIC S7-1200 CPU 1212C AC/DC/Rly (6ES7212-1BE40-0XB0), SIMATIC S7-1200 CPU 1212C DC/DC/DC (6ES7212-1AE40-0XB0), SIMATIC S7-1200 CPU 1212C DC/DC/Rly (6ES7212-1HE40-0XB0), SIMATIC S7-1200 CPU 1212FC DC/DC/DC (6ES7212-1AF40-0XB0), SIMATIC S7-1200 CPU 1212FC DC/DC/Rly (6ES7212-1HF40-0XB0), SIMATIC S7-1200 CPU 1214C AC/DC/Rly (6ES7214-1BG40-0XB0), SIMATIC S7-1200 CPU 1214C DC/DC/DC (6ES7214-1AG40-0XB0), SIMATIC S7-1200 CPU 1214C DC/DC/Rly (6ES7214-1HG40-0XB0), SIMATIC S7-1200 CPU 1214FC DC/DC/DC (6ES7214-1AF40-0XB0), SIMATIC S7-1200 CPU 1214FC DC/DC/Rly (6ES7214-1HF40-0XB0), SIMATIC S7-1200 CPU 1215C AC/DC/Rly (6ES7215-1BG40-0XB0), SIMATIC S7-1200 CPU 1215C DC/DC/DC (6ES7215-1AG40-0XB0), SIMATIC S7-1200 CPU 1215C DC/DC/Rly (6ES7215-1HG40-0XB0), SIMATIC S7-1200 CPU 1215FC DC/DC/DC (6ES7215-1AF40-0XB0), SIMATIC S7-1200 CPU 1215FC DC/DC/Rly (6ES7215-1HF40-0XB0), SIMATIC S7-1200 CPU 1217C DC/DC/DC (6ES7217-1AG40-0XB0): Update to V4.7 or a later version.
• SIMATIC S7-PLCSIM Advanced: Update to V7.0 or a later version.

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage.

For more information see the associated Siemens security advisory SSA-195895 in HTML and CSAF.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:

• Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the Internet.
• Locate control system networks and remote devices behind firewalls and isolating them from business networks.
• When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.

5. UPDATE HISTORY

• February 13, 2025: Initial Publication

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Read More – All CISA Advisories