ICSA-25-226-10: Siemens SIPROTEC 5
CISA advisory · released 2025-08-12
Source record Collected from CISA's CSAF advisory feed
- Distribution label in the document: TLP:WHITE
- Revision 1, 2025-08-12 (final)
CISA's summary
Summary: Affected SIPROTEC 5 devices do not properly limit the bandwidth for incoming network packets over their local USB port. This could allow an attacker with physical access to send specially crafted packets with high bandwidth to the affected devices thus forcing them to exhaust their memory and stop responding to any network traffic via the local USB port. Affected devices reset themselves automatically after a successful attack and the protection function is not affected of this vulnerability. Siemens has released new versions for the affected products and recommends to update to the latest versions.
Products, as the advisory lists them
| Vendor | Product | Version |
|---|---|---|
| Siemens | SIPROTEC 5 6MD84 (CP300) | vers:intdot/<10.0 |
| Siemens | SIPROTEC 5 6MD85 (CP300) | vers:intdot/>=7.80|<10.0 |
| Siemens | SIPROTEC 5 6MD86 (CP300) | vers:intdot/>=7.80|<10.0 |
| Siemens | SIPROTEC 5 6MD89 (CP300) | vers:intdot/>=7.80|<10.0 |
| Siemens | SIPROTEC 5 6MU85 (CP300) | vers:intdot/>=7.80|<10.0 |
| Siemens | SIPROTEC 5 7KE85 (CP300) | vers:intdot/>=7.80|<10.0 |
| Siemens | SIPROTEC 5 7SA82 (CP150) | vers:intdot/<10.0 |
| Siemens | SIPROTEC 5 7SA86 (CP300) | vers:intdot/>=7.80|<10.0 |
| Siemens | SIPROTEC 5 7SA87 (CP300) | vers:intdot/>=7.80|<10.0 |
| Siemens | SIPROTEC 5 7SD82 (CP150) | vers:intdot/<10.0 |
| Siemens | SIPROTEC 5 7SD86 (CP300) | vers:intdot/>=7.80|<10.0 |
| Siemens | SIPROTEC 5 7SD87 (CP300) | vers:intdot/>=7.80|<10.0 |
| Siemens | SIPROTEC 5 7SJ81 (CP150) | vers:intdot/<10.0 |
| Siemens | SIPROTEC 5 7SJ82 (CP150) | vers:intdot/<10.0 |
| Siemens | SIPROTEC 5 7SJ85 (CP300) | vers:intdot/>=7.80|<10.0 |
| Siemens | SIPROTEC 5 7SJ86 (CP300) | vers:intdot/>=7.80|<10.0 |
| Siemens | SIPROTEC 5 7SK82 (CP150) | vers:intdot/<10.0 |
| Siemens | SIPROTEC 5 7SK85 (CP300) | vers:intdot/>=7.80|<10.0 |
| Siemens | SIPROTEC 5 7SL82 (CP150) | vers:intdot/<10.0 |
| Siemens | SIPROTEC 5 7SL86 (CP300) | vers:intdot/>=7.80|<10.0 |
| Siemens | SIPROTEC 5 7SL87 (CP300) | vers:intdot/>=7.80|<10.0 |
| Siemens | SIPROTEC 5 7SS85 (CP300) | vers:intdot/>=7.80|<10.0 |
| Siemens | SIPROTEC 5 7ST85 (CP300) | vers:intdot/<10.0 |
| Siemens | SIPROTEC 5 7ST86 (CP300) | vers:intdot/<10.0 |
| Siemens | SIPROTEC 5 7SX82 (CP150) | vers:intdot/<10.0 |
| Siemens | SIPROTEC 5 7SX85 (CP300) | vers:intdot/<10.0 |
| Siemens | SIPROTEC 5 7SY82 (CP150) | vers:intdot/<10.0 |
| Siemens | SIPROTEC 5 7UM85 (CP300) | vers:intdot/>=7.80|<10.0 |
| Siemens | SIPROTEC 5 7UT82 (CP150) | vers:intdot/<10.0 |
| Siemens | SIPROTEC 5 7UT85 (CP300) | vers:intdot/>=7.80|<10.0 |
| Siemens | SIPROTEC 5 7UT86 (CP300) | vers:intdot/>=7.80|<10.0 |
| Siemens | SIPROTEC 5 7UT87 (CP300) | vers:intdot/>=7.80|<10.0 |
| Siemens | SIPROTEC 5 7VE85 (CP300) | vers:intdot/>=7.80|<10.0 |
| Siemens | SIPROTEC 5 7VK87 (CP300) | vers:intdot/>=7.80|<10.0 |
| Siemens | SIPROTEC 5 7VU85 (CP300) | vers:intdot/<10.0 |
| Siemens | SIPROTEC 5 Compact 7SX800 (CP050) | vers:intdot/<10.0 |
DeSpy has not checked any unit, hardware revision or firmware.
Vulnerabilities in this advisory
- CVE-2025-40570 — CVE-2025-40570 · CWE-770
Affected devices do not properly limit the bandwidth for incoming network packets over their local USB port. This could allow an attacker with physical access to send specially crafted packets with high bandwidth to the affected devices thus forcing them to exhaust their memory and stop responding to any network traffic via the local USB port. Affected devices reset themselves automatically after a successful attack. The protection function is not affected of this vulnerability.
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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