Description
A vulnerability exists in RTU500 IEC 60870-4-104 controlled station functionality, that allows an authenticated and authorized attacker to perform a CMU restart. The vulnerability can be triggered if certificates are updated while in use on active connections.
The affected CMU will automatically recover itself if an attacker successfully exploits this vulnerability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Hitachi Energy | RTU500 | 13.4.1 – ≤ 13.4.4, 13.5.1 – ≤ 13.5.3, 13.5.3, 13.6.1, 13.7.1 | 13.5.4 |
Advisories 2
- ICSA-25-093-01 Hitachi Energy RTU500 Series (Update B) CISA ICS & IT advisories · Sep 9, 2025
- WID-SEC-2025-0637 Hitachi Energy RTU500: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Mar 25, 2025