PatchSiren cyber security CVE debrief
CVE-2026-71960 Shenzhen Cudy Technology Co., Ltd. CVE debrief
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-19T15:18:01.943Z and has not been modified since then. The NVD entry is currently Received. CVE-2026-71960 is a critical vulnerability in Cudy WR3000 2.0 firmware before 2.5.24, allowing unauthenticated attackers to forge valid JWT tokens and gain unauthorized access to the device's mesh networking interface. Organizations using Cudy WR3000 2.0 with firmware versions before 2.5.24 should prioritize patching this vulnerability. Security teams and administrators responsible for IoT devices and network security should be aware of this critical vulnerability and take necessary actions to mitigate the risk. The vulnerability has a CVSS score of 9.3 and requires immediate attention. Evidence from the NVD and vendor sources confirms this critical vulnerability.
- Vendor
- Shenzhen Cudy Technology Co., Ltd.
- Product
- WR3000 2.0
- CVSS
- CRITICAL 9.3
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-08-19
- Original CVE updated
- 2026-08-21
- Advisory published
- 2026-08-19
- Advisory updated
- 2026-08-21
Who should care
Organizations using Cudy WR3000 2.0 with firmware versions before 2.5.24 should prioritize patching this vulnerability. Additionally, security teams and administrators responsible for IoT devices and network security should be aware of this critical vulnerability and take necessary actions to mitigate the risk.
Technical summary
CVE-2026-71960 is a critical vulnerability in Cudy WR3000 2.0 firmware before 2.5.24. The Mosquitto MQTT broker's authentication plugin contains a hard-coded JWT HMAC signing secret, allowing unauthenticated attackers to forge valid JWT tokens and gain unauthorized access to the device's mesh networking interface. This vulnerability has a CVSS score of 9.3 and requires immediate attention. The vulnerability is caused by a hard-coded JWT HMAC signing secret in the Mosquitto MQTT broker's authentication plugin of Cudy WR3000 2.0 firmware before 2.5.24. Attackers can extract the secret from the firmware image and craft arbitrary JWT tokens for authentication. The NVD entry provides CVSS score and vulnerability information. The vendor provides firmware updates for WR3000 2.0.
Defensive priority
CVE-2026-71960 is a critical vulnerability with a CVSS score of 9.3, allowing unauthenticated attackers to forge valid JWT tokens and gain unauthorized access to the device's mesh networking interface. Immediate attention is required to mitigate this vulnerability.
Recommended defensive actions
- Inventory and identify all instances of Cudy WR3000 2.0 with firmware versions before 2.5.24
- Apply the firmware update to version 2.5.24 or later immediately
- Implement compensating controls such as monitoring and restricting access to the MQTT broker
- Verify the integrity of the firmware image and configuration files
- Consider disabling the MQTT broker if not required
Evidence notes
The CVE-2026-71960 vulnerability is caused by a hard-coded JWT HMAC signing secret in the Mosquitto MQTT broker's authentication plugin of Cudy WR3000 2.0 firmware before 2.5.24. This allows attackers to extract the secret from the firmware image and craft arbitrary JWT tokens for authentication. Evidence from the NVD and vendor sources confirms this critical vulnerability.
Official resources
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-19T15:18:01.943Z and has not been modified since then.