What is CVE-2026-71960?

CVE-2026-71960 is a critical-severity vulnerability in Shenzhen Cudy Technology Co., Ltd. Wr3000 2.0, classified under Use of Hard-coded Credentials. CVSS score: 9.1/10. Published 2026-08-19.

How severe is CVE-2026-71960?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in Shenzhen Cudy Technology Co., Ltd. Wr3000 2.0

CVE-2026-71960

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.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Shenzhen Cudy Technology Co., Ltd. Wr3000 2.0

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

References

disclosure@vulncheck.com (release-notes)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-71960?: CVE-2026-71960 is a critical-severity vulnerability in Shenzhen Cudy Technology Co., Ltd. Wr3000 2.0, classified under Use of Hard-coded Credentials. CVSS score: 9.1/10. Published 2026-08-19.
How severe is CVE-2026-71960?: Critical severity. CVSS v3 base score is 9.1 out of 10.