CVE-2022-38465

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-10-11 · updated 2026-06-17
Weakness: CWE-522

Description

A vulnerability has been identified in SIMATIC Drive Controller family (All versions < V2.9.2), SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants) (All versions), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions < V21.9), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions < V4.5.0), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V2.9.2), SIMATIC S7-1500 Software Controller (All versions < V21.9), SIMATIC S7-PLCSIM Advanced (All versions < V4.0), SINUMERIK MC (All versions < V6.21), SINUMERIK ONE (All versions < V6.21). Affected products protect the built-in global private key in a way that cannot be considered sufficient any longer. The key is used for the legacy protection of confidential configuration data and the legacy PG/PC and HMI communication. This could allow attackers to discover the private key of a CPU product family by an offline attack against a single CPU of the family. Attackers could then use this knowledge to extract confidential configuration data from projects that are protected by that key or to perform attacks against legacy PG/PC and HMI communication.

Affected products

Siemens Simatic Drive Controller Cpu 1504D Tf Firmware: before 2.9.2 — fixed in 2.9.2
Siemens Simatic Drive Controller Cpu 1507D Tf Firmware: before 2.9.2 — fixed in 2.9.2
Siemens Simatic Et 200 Sp Open Controller Cpu 1515Sp Pc2 Firmware: before 21.9 — fixed in 21.9
Siemens Simatic Et 200 Sp Open Controller Cpu 1515Sp Pc Firmware: all versions
Siemens Simatic S7-1200 Cpu 12 1211C Firmware: before 4.5.0 — fixed in 4.5.0
Siemens Simatic S7-1200 Cpu 12 1212C Firmware: before 4.5.0 — fixed in 4.5.0
Siemens Simatic S7-1200 Cpu 12 1212Fc Firmware: before 4.5.0 — fixed in 4.5.0
Siemens Simatic S7-1200 Cpu 12 1214C Firmware: before 4.5.0 — fixed in 4.5.0
Siemens Simatic S7-1200 Cpu 12 1214Fc Firmware: before 4.5.0 — fixed in 4.5.0
Siemens Simatic S7-1200 Cpu 12 1215C Firmware: before 4.5.0 — fixed in 4.5.0
Siemens Simatic S7-1200 Cpu 12 1215Fc Firmware: before 4.5.0 — fixed in 4.5.0
Siemens Simatic S7-1200 Cpu 12 1217C Firmware: before 4.5.0 — fixed in 4.5.0
Siemens Simatic S7-1500 Cpu 1510Sp-1 Firmware: before 2.9.2 — fixed in 2.9.2
Siemens Simatic S7-1500 Cpu 1510Sp Firmware: before 2.9.2 — fixed in 2.9.2
Siemens Simatic S7-1500 Cpu 1511-1 Firmware: before 2.9.2 — fixed in 2.9.2
Siemens Simatic S7-1500 Cpu 1511T-1 Firmware: before 2.9.2 — fixed in 2.9.2
Siemens Simatic S7-1500 Cpu 1511Tf-1 Firmware: before 2.9.2 — fixed in 2.9.2
Siemens Simatic S7-1500 Cpu 1512C-1 Firmware: before 2.9.2 — fixed in 2.9.2
Siemens Simatic S7-1500 Cpu 1512Sp-1 Firmware: before 2.9.2 — fixed in 2.9.2
Siemens Simatic S7-1500 Cpu 1512Spf-1 Firmware: before 2.9.2 — fixed in 2.9.2
Siemens Simatic S7-1500 Cpu 1513-1 Firmware: before 2.9.2 — fixed in 2.9.2
Siemens Simatic S7-1500 Cpu 1513F-1 Firmware: before 2.9.2 — fixed in 2.9.2
Siemens Simatic S7-1500 Cpu 1513R-1 Firmware: before 2.9.2 — fixed in 2.9.2
Siemens Simatic S7-1500 Cpu 1515-2 Firmware: before 2.9.2 — fixed in 2.9.2
Siemens Simatic S7-1500 Cpu 151511C-1 Firmware: before 2.9.2 — fixed in 2.9.2
Siemens Simatic S7-1500 Cpu 151511F-1 Firmware: before 2.9.2 — fixed in 2.9.2
Siemens Simatic S7-1500 Cpu 1515F-2 Firmware: before 2.9.2 — fixed in 2.9.2
Siemens Simatic S7-1500 Cpu 1515R-2 Firmware: before 2.9.2 — fixed in 2.9.2
Siemens Simatic S7-1500 Cpu 1515T-2 Firmware: before 2.9.2 — fixed in 2.9.2
Siemens Simatic S7-1500 Cpu 1516-3 Firmware: before 2.9.2 — fixed in 2.9.2

How to fix

Upgrade to a fixed version: Siemens Simatic Drive Controller Cpu 1504D Tf Firmware 2.9.2; Siemens Simatic Drive Controller Cpu 1507D Tf Firmware 2.9.2; Siemens Simatic Et 200 Sp Open Controller Cpu 1515Sp Pc2 Firmware 21.9; Siemens Simatic S7-1200 Cpu 12 1211C Firmware 4.5.0; Siemens Simatic S7-1200 Cpu 12 1212C Firmware 4.5.0; Siemens Simatic S7-1200 Cpu 12 1212Fc Firmware 4.5.0; Siemens Simatic S7-1200 Cpu 12 1214C Firmware 4.5.0; Siemens Simatic S7-1200 Cpu 12 1214Fc Firmware 4.5.0; Siemens Simatic S7-1200 Cpu 12 1215C Firmware 4.5.0; Siemens Simatic S7-1200 Cpu 12 1215Fc Firmware 4.5.0; Siemens Simatic S7-1200 Cpu 12 1217C Firmware 4.5.0; Siemens Simatic S7-1500 Cpu 1510Sp-1 Firmware 2.9.2. Check the vendor advisory for mitigations.

References

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