There is a debug-interface vulnerability on some Tenda routers (FH1202/F1202/F1200…
Key facts
- Attack vector
- Adjacent network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
There is a debug-interface vulnerability on some Tenda routers (FH1202/F1202/F1200: versions before 1.2.0.20). After connecting locally to a router in a wired or wireless manner, one can bypass intended access restrictions by sending shell commands directly and reading their results, or by entering shell commands that change this router's username and password.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:tendacn:f1200_firmware:*:*:*:*:*:*:*:* | up to 1.2.0.19 | Vulnerable | Tendacn |
| cpe:2.3:h:tendacn:f1200:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Tendacn |
| cpe:2.3:o:tendacn:fh1202_firmware:*:*:*:*:*:*:*:* | up to 1.2.0.19 | Vulnerable | Tendacn |
| cpe:2.3:h:tendacn:fh1202:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Tendacn |
| cpe:2.3:o:tendacn:f1202_firmware:*:*:*:*:*:*:*:* | up to 1.2.0.19 | Vulnerable | Tendacn |
| cpe:2.3:h:tendacn:f1202:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Tendacn |
- cpe:2.3:o:tendacn:f1200_firmware:*:*:*:*:*:*:*:* Versions up to 1.2.0.19 Vulnerable ·Tendacn
- cpe:2.3:h:tendacn:f1200:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Tendacn
- cpe:2.3:o:tendacn:fh1202_firmware:*:*:*:*:*:*:*:* Versions up to 1.2.0.19 Vulnerable ·Tendacn
- cpe:2.3:h:tendacn:fh1202:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Tendacn
- cpe:2.3:o:tendacn:f1202_firmware:*:*:*:*:*:*:*:* Versions up to 1.2.0.19 Vulnerable ·Tendacn
- cpe:2.3:h:tendacn:f1202:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Tendacn
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-9138
- 2026-10-03 Alias added: GHSA-9r56-m5wr-p8gc
References
Advisory 1
More Tendacn F1200 Firmware vulnerabilities
- TI-2017-06590 There is a stack-based buffer overflow on some Tenda routers (FH1202/F1202/F1200… CVSS 3.0LOW 3.5
Sources
- CVE-2017-9138 · CVE Program
- CVE-2017-9138 · NVD
- FIRST EPSS
- GHSA-9r56-m5wr-p8gc · 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