CVE-2021-41292: Ecoa Ecs Router Controller-Ecs Firmware

Critical severity, CVSS 9.1. EPSS: 1.2% chance of exploitation in the next 30 days.

ECOA BAS controller suffers from an authentication bypass vulnerability. An unauthenticated attacker through cookie poisoning can remotely bypass authentication and disclose sensitive information and circumvent physical access controls in smart homes and buildings and manipulate HVAC.

Affected products

• Ecoa Ecs Router Controller-Ecs Firmware: affected versions not specified
• Ecoa Riskbuster Firmware: affected versions not specified
• Ecoa Riskterminator: affected versions not specified

Published 2021-09-30. Last modified 2026-06-17.