ICSA-23-257-01: Siemens SIMATIC, SIPLUS Products
CISA advisory · released 2023-09-12
Source record Collected from CISA's CSAF advisory feed
- Distribution label in the document: TLP:WHITE
- Revision 16, 2025-11-11 (final)
CISA's summary
Summary: The OPC UA implementations (ANSI C and C++) as used in several SIMATIC products contain a denial of service vulnerability that could allow an unauthenticated remote attacker to create a denial of service condition by sending a specially crafted certificate. Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where fixes are not, or not yet available.
Products, as the advisory lists them
| Vendor | Product | Version |
|---|---|---|
| Siemens | SIMATIC BRAUMAT | <V8.1_SP1 |
| Siemens | SIMATIC Cloud Connect 7 CC712 (6GK1411-1AC00) | vers:intdot/<2.2 |
| Siemens | SIMATIC Cloud Connect 7 CC716 (6GK1411-5AC00) | vers:intdot/<2.2 |
| Siemens | SIMATIC Comfort/Mobile RT | vers:all/* |
| Siemens | SIMATIC Drive Controller CPU 1504D TF (6ES7615-4DF10-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC Drive Controller CPU 1504D TF (6ES7615-4DF10-0AB0) | vers:intdot/>=3.0.1|<3.0.3 |
| Siemens | SIMATIC Drive Controller CPU 1507D TF (6ES7615-7DF10-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC Drive Controller CPU 1507D TF (6ES7615-7DF10-0AB0) | vers:intdot/>=3.0.1|<3.0.3 |
| Siemens | SIMATIC ET 200SP CPU 1510SP F-1 PN (6ES7510-1SJ01-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC ET 200SP CPU 1510SP F-1 PN (6ES7510-1SK03-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC ET 200SP CPU 1510SP-1 PN (6ES7510-1DJ01-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC ET 200SP CPU 1510SP-1 PN (6ES7510-1DK03-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC ET 200SP CPU 1512SP F-1 PN (6ES7512-1SK01-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC ET 200SP CPU 1512SP F-1 PN (6ES7512-1SM03-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC ET 200SP CPU 1512SP-1 PN (6ES7512-1DK01-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC ET 200SP CPU 1512SP-1 PN (6ES7512-1DM03-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC ET 200SP CPU 1514SP F-2 PN (6ES7514-2SN03-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC ET 200SP CPU 1514SP-2 PN (6ES7514-2DN03-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC ET 200SP CPU 1514SPT F-2 PN (6ES7514-2WN03-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC ET 200SP CPU 1514SPT-2 PN (6ES7514-2VN03-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) | vers:intdot/<21.9.7 |
| Siemens | SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) | vers:intdot/>=30.0.0|<30.1.0 |
| Siemens | SIMATIC IPC DiagMonitor | vers:all/* |
| Siemens | SIMATIC NET PC Software V14 | vers:all/* |
| Siemens | SIMATIC NET PC Software V16 | <V16_Update_8 |
| Siemens | SIMATIC NET PC Software V17 | <V17_SP1_Update_1 |
| Siemens | SIMATIC NET PC Software V18 | <V18_Update_1 |
| Siemens | SIMATIC PCS 7 V9.1 | <V9.1_SP2_UC08 |
| Siemens | SIMATIC PCS neo V4.0 | vers:all/* |
| Siemens | SIMATIC S7-1500 CPU 1511-1 PN (6ES7511-1AK01-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU 1511-1 PN (6ES7511-1AK02-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU 1511-1 PN (6ES7511-1AL03-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC S7-1500 CPU 1511C-1 PN (6ES7511-1CK00-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU 1511C-1 PN (6ES7511-1CK01-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU 1511F-1 PN (6ES7511-1FK01-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU 1511F-1 PN (6ES7511-1FK02-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU 1511F-1 PN (6ES7511-1FL03-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC S7-1500 CPU 1511T-1 PN (6ES7511-1TK01-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU 1511T-1 PN (6ES7511-1TL03-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC S7-1500 CPU 1511TF-1 PN (6ES7511-1UK01-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU 1511TF-1 PN (6ES7511-1UL03-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC S7-1500 CPU 1512C-1 PN (6ES7512-1CK00-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU 1512C-1 PN (6ES7512-1CK01-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU 1513-1 PN (6ES7513-1AL01-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU 1513-1 PN (6ES7513-1AL02-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU 1513-1 PN (6ES7513-1AM03-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC S7-1500 CPU 1513F-1 PN (6ES7513-1FL01-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU 1513F-1 PN (6ES7513-1FL02-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU 1513F-1 PN (6ES7513-1FM03-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC S7-1500 CPU 1515-2 PN (6ES7515-2AM01-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU 1515-2 PN (6ES7515-2AM02-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU 1515-2 PN (6ES7515-2AN03-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC S7-1500 CPU 1515F-2 PN (6ES7515-2FM01-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU 1515F-2 PN (6ES7515-2FM02-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU 1515F-2 PN (6ES7515-2FN03-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC S7-1500 CPU 1515T-2 PN (6ES7515-2TM01-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU 1515T-2 PN (6ES7515-2TN03-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC S7-1500 CPU 1515TF-2 PN (6ES7515-2UM01-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU 1515TF-2 PN (6ES7515-2UN03-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC S7-1500 CPU 1516-3 PN/DP (6ES7516-3AN01-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU 1516-3 PN/DP (6ES7516-3AN02-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU 1516-3 PN/DP (6ES7516-3AP03-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC S7-1500 CPU 1516F-3 PN/DP (6ES7516-3FN01-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU 1516F-3 PN/DP (6ES7516-3FN02-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU 1516F-3 PN/DP (6ES7516-3FP03-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC S7-1500 CPU 1516T-3 PN/DP (6ES7516-3TN00-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC S7-1500 CPU 1516TF-3 PN/DP (6ES7516-3UN00-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC S7-1500 CPU 1517-3 PN/DP (6ES7517-3AP00-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC S7-1500 CPU 1517F-3 PN/DP (6ES7517-3FP00-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC S7-1500 CPU 1517T-3 PN/DP (6ES7517-3TP00-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC S7-1500 CPU 1517TF-3 PN/DP (6ES7517-3UP00-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP (6ES7518-4AP00-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP (6ES7518-4FP00-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC S7-1500 CPU 1518T-4 PN/DP (6ES7518-4TP00-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC S7-1500 CPU 1518TF-4 PN/DP (6ES7518-4UP00-0AB0) | vers:intdot/<3.0.3 |
| Siemens | SIMATIC S7-1500 CPU S7-1518-4 PN/DP ODK (6ES7518-4AP00-3AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 CPU S7-1518F-4 PN/DP ODK (6ES7518-4FP00-3AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 ET 200pro: CPU 1513PRO F-2 PN (6ES7513-2GL00-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 ET 200pro: CPU 1513PRO-2 PN (6ES7513-2PL00-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 ET 200pro: CPU 1516PRO F-2 PN (6ES7516-2GN00-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 ET 200pro: CPU 1516PRO-2 PN (6ES7516-2PN00-0AB0) | vers:intdot/<2.9.7 |
| Siemens | SIMATIC S7-1500 Software Controller V2 | vers:intdot/<21.9.7 |
| Siemens | SIMATIC S7-1500 Software Controller V3 | vers:intdot/<30.1.0 |
| Siemens | SIMATIC S7-PLCSIM Advanced | <V5.0_Update_2 |
| Siemens | SIMATIC SISTAR | <V8.1_SP1 |
| Siemens | SIMATIC WinCC OA V3.17 | <V3.17_P029 |
| Siemens | SIMATIC WinCC OA V3.18 | <V3.18_P019 |
| Siemens | SIMATIC WinCC OA V3.19 | <V3.19_P005 |
| Siemens | SIMATIC WinCC OPC UA Client | vers:intdot/<2.0.0.1 |
| Siemens | SIMATIC WinCC Runtime Professional V16 | vers:all/* |
| Siemens | SIMATIC WinCC Runtime Professional V17 | vers:all/* |
| Siemens | SIMATIC WinCC Runtime Professional V18 | vers:all/* |
| Siemens | SIMATIC WinCC Runtime Professional V19 | <V19_Update_2 |
| Siemens | SIMATIC WinCC Unified OPC UA Server | vers:intdot/<5.0.0.0 |
| Siemens | SIMATIC WinCC V7.4 | vers:all/* |
| Siemens | SIMATIC WinCC V7.5 | <V7.5_SP2_Update_20 |
| Siemens | SIMATIC WinCC V8.0 | <V8.0_Update_5 |
| Siemens | SIPLUS ET 200SP CPU 1510SP F-1 PN (6AG1510-1SJ01-2AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS ET 200SP CPU 1510SP F-1 PN RAIL (6AG2510-1SJ01-1AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS ET 200SP CPU 1510SP-1 PN (6AG1510-1DJ01-2AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS ET 200SP CPU 1510SP-1 PN (6AG1510-1DJ01-7AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS ET 200SP CPU 1510SP-1 PN RAIL (6AG2510-1DJ01-1AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS ET 200SP CPU 1510SP-1 PN RAIL (6AG2510-1DJ01-4AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS ET 200SP CPU 1512SP F-1 PN (6AG1512-1SK01-2AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS ET 200SP CPU 1512SP F-1 PN (6AG1512-1SK01-7AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS ET 200SP CPU 1512SP F-1 PN RAIL (6AG2512-1SK01-1AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS ET 200SP CPU 1512SP F-1 PN RAIL (6AG2512-1SK01-4AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS ET 200SP CPU 1512SP-1 PN (6AG1512-1DK01-2AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS ET 200SP CPU 1512SP-1 PN (6AG1512-1DK01-7AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS ET 200SP CPU 1512SP-1 PN RAIL (6AG2512-1DK01-1AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS ET 200SP CPU 1512SP-1 PN RAIL (6AG2512-1DK01-4AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1511-1 PN (6AG1511-1AK01-2AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1511-1 PN (6AG1511-1AK01-7AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1511-1 PN (6AG1511-1AK02-2AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1511-1 PN (6AG1511-1AK02-7AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1511-1 PN T1 RAIL (6AG2511-1AK01-1AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1511-1 PN T1 RAIL (6AG2511-1AK02-1AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1511-1 PN TX RAIL (6AG2511-1AK01-4AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1511-1 PN TX RAIL (6AG2511-1AK02-4AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1511F-1 PN (6AG1511-1FK01-2AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1511F-1 PN (6AG1511-1FK02-2AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1513-1 PN (6AG1513-1AL01-2AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1513-1 PN (6AG1513-1AL01-7AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1513-1 PN (6AG1513-1AL02-2AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1513-1 PN (6AG1513-1AL02-7AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1513F-1 PN (6AG1513-1FL01-2AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1513F-1 PN (6AG1513-1FL02-2AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1515F-2 PN (6AG1515-2FM01-2AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1515F-2 PN (6AG1515-2FM02-2AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1515F-2 PN RAIL (6AG2515-2FM02-4AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1515F-2 PN T2 RAIL (6AG2515-2FM01-2AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1516-3 PN/DP (6AG1516-3AN01-2AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1516-3 PN/DP (6AG1516-3AN01-7AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1516-3 PN/DP (6AG1516-3AN02-2AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1516-3 PN/DP (6AG1516-3AN02-7AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1516-3 PN/DP RAIL (6AG2516-3AN02-4AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1516-3 PN/DP TX RAIL (6AG2516-3AN01-4AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1516F-3 PN/DP (6AG1516-3FN01-2AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1516F-3 PN/DP (6AG1516-3FN02-2AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1516F-3 PN/DP RAIL (6AG2516-3FN02-2AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1516F-3 PN/DP RAIL (6AG2516-3FN02-4AB0) | vers:intdot/<2.9.7 |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP (6AG1518-4AP00-4AB0) | vers:intdot/<3.0.3 |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) | vers:intdot/<3.0.3 |
| Siemens | SIPLUS S7-1500 CPU 1518F-4 PN/DP (6AG1518-4FP00-4AB0) | vers:intdot/<3.0.3 |
DeSpy has not checked any unit, hardware revision or firmware.
Vulnerabilities in this advisory
- CVE-2023-28831 — CVE-2023-28831 · CWE-190
The OPC UA implementations (ANSI C and C++) in affected products contain an integer overflow vulnerability that could cause the application to run into an infinite loop during certificate validation. This could allow an unauthenticated remote attacker to create a denial of service condition by sending a specially crafted certificate.
Acknowledgments, as the advisory lists them
- Siemens ProductCERT: reporting this vulnerability to CISA.
The advisory's legal notice
The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/terms-of-use.
Sources
DeSpy's copy of this version is dated 2026-09-28.
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