CVE-2026-66405: Ecovacs Robotics Deebot Pro k1vac

High severity, CVSS 8.8. EPSS: 0.5% chance of exploitation in the next 30 days.

DEEBOT PRO M1 and DEEBOT PRO K1VAC leave the telnet servers enabled. The telnet service may be leveraged to log in to the affected products.

Affected products

• Ecovacs Robotics Deebot Pro k1vac: before V1.7.821 (fixed in V1.7.821)
• Ecovacs Robotics Deebot Pro m1: before M1-1.7.27 (fixed in M1-1.7.27)

Published 2026-08-10. Last modified 2026-08-28.