Description
A vulnerability has been identified in CPCI85 Central Processing/Communication (All versions < V05.30). The affected devices contain a secure element which is connected via an unencrypted SPI bus. This could allow an attacker with physical access to the SPI bus to observe the password used for the secure element authentication, and then use the secure element as an oracle to decrypt all encrypted update files.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Siemens | CPCI85 Central Processing/Communication | < V05.30 | V05.30 |
Advisories 4
- ICSA-24-347-01 Siemens CPCI85 Central Processing/Communication CISA ICS & IT advisories · May 6, 2025
- WID-SEC-2024-3655 Siemens SICAM: Schwachstelle ermöglicht Offenlegung von Informationen BSI CERT-Bund (WID) · Dec 10, 2024
- NCSC-2024-0473 Kwetsbaarheden verholpen in Siemens producten NCSC-NL (Netherlands) · Dec 10, 2024
- SSA-128393 SSA-128393: Firmware Decryption Vulnerability in SICAM A8000 CP-8031 and CP-8050 Siemens ProductCERT · Dec 10, 2024