CVE-2026-1627: Sick LMS1000 Firmware

High severity, CVSS 8.1. EPSS: 0.2% chance of exploitation in the next 30 days.

An attacker may exploit the use of outdated and weak MAC algorithms in the device’s SSH service to potentially compromise the integrity of the SSH session, allowing manipulation of transmitted data if the attacker can 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.