CVE-2026-71960
Cudy WR3000 2.0 Hard-coded JWT Secret Authentication Bypass via MQTT
CRITICAL 9.3EPSS 0.5%
Cudy WR3000 2.0 running firmware before 2.5.24 contains a hard-coded JWT HMAC signing secret vulnerability in the Mosquitto MQTT broker's authentication plugin that allows unauthenticated attackers to forge valid JWT tokens by extracting the secret from the firmware image. Attackers can use the extracted secret to craft arbitrary JWT tokens and authenticate to the MQTT broker without legitimate credentials, gaining unauthorized access to the device's mesh networking interface.
- Affected
- Shenzhen Cudy Technology Co., Ltd. · WR3000 2.0 · P5 V1.1
- CVSS v4.0 VULNCHECK
- 9.3 CRITICAL
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS v3.1 VULNCHECK
- 9.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - EPSS
- 0.53% chance of exploitation in the next 30 days, 44th percentile
- Published
- 2026-08-19
- Updated
- 2026-08-31
Proof-of-concept exploits (1)
- Hunt-Benito/the-same-key-opens-every-box-cve-2026-71960-hard-coded-jwt-secret-in-cudy-wr3…0★ · 2026-08-20