CVE-2023-22600: Inhandnetworks INROUTER302 Firmware

High severity, CVSS 8.1. EPSS: 0.5% chance of exploitation in the next 30 days.

InHand Networks InRouter 302, prior to version IR302 V3.5.56, and InRouter 615, prior to version InRouter6XX-S-V2.3.0.r5542, contain vulnerability CWE-284: Improper Access Control. They allow unauthenticated devices to subscribe to MQTT topics on the same network as the device manager. An unauthorized user who knows of an existing topic name could send and receive messages to and from that topic. This includes the ability to send GET/SET configuration commands, reboot commands, and push firmware updates.

Affected products

• Inhandnetworks INROUTER302 Firmware: before 3.5.56 (fixed in 3.5.56)
• Inhandnetworks INROUTER615-S Firmware: before 2.3.0.r5542 (fixed in 2.3.0.r5542)

Published 2023-01-12. Last modified 2026-06-17.