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CVE-2026-71960— Cudy WR3000 2.0 Hard-coded JWT Secret Authentication Bypass via MQTT

Quick assessment

Affected
Shenzhen Cudy Technology Co., Ltd. WR3000 2.0
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cudy WR3000是中国Cudy公司的一款高性能无线路由器。 Cudy WR3000 2.0 2.5.24之前版本存在信任管理问题漏洞，该漏洞源于Mosquitto MQTT broker的认证插件中硬编码的JWT HMAC签名密钥，攻击者可提取固件映像中的密钥伪造JWT令牌，绕过身份验证并获取设备网格网络接口的未授权访问。

CVSS 9.1 · Critical EPSS 0.53% · P43

Affected Version Matrix 2

VendorProduct Version RangeStatus
Shenzhen Cudy Technology Co., Ltd. P5 V1.1 2.4.25≤ 2.4.27 affected
Shenzhen Cudy Technology Co., Ltd. WR3000 2.0 < 2.5.24 affected
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I. Basic Information for CVE-2026-71960

Vulnerability Information
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Vulnerability Title
Cudy WR3000 2.0 Hard-coded JWT Secret Authentication Bypass via MQTT
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用硬编码的凭证
Source: CVE Program / CVE List V5
Vulnerability Title
Cudy WR3000 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cudy WR3000是中国Cudy公司的一款高性能无线路由器。 Cudy WR3000 2.0 2.5.24之前版本存在信任管理问题漏洞，该漏洞源于Mosquitto MQTT broker的认证插件中硬编码的JWT HMAC签名密钥，攻击者可提取固件映像中的密钥伪造JWT令牌，绕过身份验证并获取设备网格网络接口的未授权访问。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Shenzhen Cudy Technology Co., Ltd. WR3000 2.0 0 ~ 2.5.24 -
Shenzhen Cudy Technology Co., Ltd. P5 V1.1 2.4.25 ~ 2.4.27 -

II. Public POCs for CVE-2026-71960

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III. Intelligence Information for CVE-2026-71960

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Vendor Pages for CVE-2026-71960 (1)

Other References for CVE-2026-71960 (1)

IV. Related Vulnerabilities

Same product: WR3000 2.0
Same vendor: Shenzhen Cudy Technology Co., Ltd.
Same weakness: CWE-798

V. Comments for CVE-2026-71960

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