CVE-2023-42143: Shelly Trv Firmware

Medium severity, CVSS 5.4. EPSS: 0.2% chance of exploitation in the next 30 days.

Missing Integrity Check in Shelly TRV 20220811-152343/v2.1.8@5afc928c allows malicious users to create a backdoor by redirecting the device to an attacker-controlled machine which serves the manipulated firmware file. The device is updated with the manipulated firmware.

Affected products

• Shelly Trv Firmware: version 2.1.8 only

Published 2024-01-23. Last modified 2026-06-17.