CVE-2026-71961: high-severity vulnerability in Shenzhen Cudy Technology Co., Ltd. WR3000 2.0
Cudy WR3000 2.0 OS Command Injection via Mesh MQTT Command Handler
Published · Updated
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 2.7%
exploitation probability
2.7%top 14% of all CVEs
observed exploitation
nono source reports it
Cudy WR3000 2.0 running firmware before 2.5.24 contains an OS command injection vulnerability that allows authenticated attackers to execute arbitrary OS commands with root privileges by sending unsanitized input through the mesh MQTT command interface. The sync_command binary forwards unsanitized input directly to a shell execution sink in command.lua, enabling attackers with access to the MQTT broker to exploit the default-enabled command execution path to achieve full root-level system compromise.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
Shenzhen Cudy Technology Co., Ltd. · WR3000 2.0Related CVEs — Shenzhen Cudy Technology Co., Ltd. WR3000 2.0
In the same product, most dangerous first.