Description
Multiple Lenze products are affected by an improper signature verification vulnerability in the SSH enablement mechanism. A low-privileged local attacker can bypass verification of the SSH enable file signature and enable SSH access on the device. Successful exploitation may result in unauthorized administrative access and complete system compromise.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Lenze | c430 | 1.0.0 – < 1.15.2 | 1.15.2 |
| Lenze | c520 | 1.0.0 – < 1.15.2 | 1.15.2 |
| Lenze | c550 | 1.0.0 – < 1.15.2 | 1.15.2 |
| Lenze | i950 GenA | 1.0.0 – < 1.14.2 | 1.14.2 |
| Lenze | i950 GenB | 2.0.0 – < 2.0.3 | 2.0.3 |
Advisories 1
- VDE-2026-077 Lenze: Incorrect signature validation in the enable SSH routine CERT@VDE · Jul 27, 2026