Description
A vulnerability has been identified in SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (V4.5.0). Affected devices fail to authenticate against configured passwords when provisioned using TIA Portal V13. This could allow an attacker using TIA Portal V13 or later versions to bypass authentication and download arbitrary programs to the PLC. The vulnerability does not occur when TIA Portal V13 SP1 or any later version was used to provision the device.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Siemens | SIMATIC S7-1200 CPU family (incl. SIPLUS variants) | V4.5.0 | — |
Advisories 2
- ICSA-21-222-09 Siemens SIMATIC S7-1200 (Update A) CISA ICS & IT advisories · May 6, 2025
- SSA-830194 SSA-830194: Missing Authentication Vulnerability in S7-1200 Devices Siemens ProductCERT · Sep 14, 2021