CVE-2026-1626: Sick LMS1000 Firmware

Critical severity, CVSS 9.1. EPSS: 0.2% chance of exploitation in the next 30 days.

An attacker may exploit the use of weak CBC-based cipher suites in the device’s SSH service to potentially observe or manipulate parts of the encrypted SSH communication, if they are able to intercept or interact with the network traffic.

Affected products

• Sick LMS1000 Firmware: before 2.4.1 (fixed in 2.4.1)
• Sick MRS1000 Firmware: before 2.4.1 (fixed in 2.4.1)

Published 2026-02-27. Last modified 2026-06-17.