CVE-2026-71961CWE-78command-injection

CVE-2026-71961

High · published August 19, 2026

CVSS v3.1
8.8
EPSS
3%
Percentile
85.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
8.7 · 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
EPSS
0.02703 · 85.9th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-08-19T19:18Z
References (2)
https://www.cudy.com/en-us/pages/download-center/wr3000-2-0 · [email protected]https://www.vulncheck.com/advisories/cudy-wr3000-os-command-injection-via-mesh-mqtt-command-handler · [email protected]
EPSS history
Timeline
  • 19 AUG 14:28Z
    Cudy WR3000 2.0 OS Command Injection via Mesh MQTT Command Handler
    cvelistv5