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High · 7.5 CVE-2026-75490 EUVD-2026-125266GHSA-5h9g-3hw3-h234

Cudy TR3000 before 2.5.42 Unauthenticated RCE via mDNS Automesh Broker Adoption

Published Nov 13, 2026 · Updated Nov 13, 2026 · Assigned by VulnCheck

Description

Cudy TR3000 before 2.5.42 contains a remote code execution vulnerability that allows unauthenticated adjacent attackers to run root commands by advertising a rogue automesh controller over mDNS. Attackers on the upstream Ethernet segment can advertise _cudycmagent._tcp records pointing to a malicious MQTT broker, then send commands encrypted with a fixed AES key that router/batchcmd.lua executes as root.

Affected products

VendorProductAffectedFixed
Shenzhen Cudy Technology TR3000 1.0 < 2.5.42 2.5.42

References