Cudy WR3000 2.0 OS Command Injection via Mesh MQTT Command Handler
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Shenzhen Cudy Technology Co., Ltd. | WR3000 2.0 | before 2.5.24 | 2.5.24 | Patch available | CNA |
- WR3000 2.0 VendorShenzhen Cudy Technology Co., Ltd. Affected before 2.5.24 Fixed in 2.5.24 Patch available CNA
Remediation
- Fix · CNA WR3000 2.0 (Shenzhen Cudy Technology Co., Ltd.) Fixed in 2.5.24
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Shenzhen Cudy Technology WR3000 2.0 2.5.24
2 records Highest priority Priority MEDIUM 2 MEDIUM
Other records, highest priority first
- TI-2026-50255 Cudy WR3000 2.0 Hard-coded JWT Secret Authentication Bypass via MQTTPriority MEDIUM 49
Timeline
- 2026-10-02 Threatist record created from CVE-2026-71961
- 2026-10-03 Alias added: GHSA-8jmp-g7g6-gf45
References
Other 1
More Shenzhen Cudy Technology Co., Ltd. vulnerabilities
- TI-2026-50255 Cudy WR3000 2.0 Hard-coded JWT Secret Authentication Bypass via MQTT CVSS 4.0CRITICAL 9.3
- TI-2026-25297 Cudy LT300 3.0 OS Command Injection via NTP Configuration CVSS 4.0HIGH 8.7
Sources
- CVE-2026-71961 · CVE Program
- CVE-2026-71961 · NVD
- FIRST EPSS
- GHSA-8jmp-g7g6-gf45 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences