TOTOLINK N350R Telnet Service formSysTel backdoor
Priority LOW 24CWE-912Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
A vulnerability was found in TOTOLINK N350R 1.2.3-B20130826. This issue affects the function formSysTel of the file /boafrm/formSysTel of the component Telnet Service. The manipulation of the argument TelEnabled leads to backdoor. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00353 29th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
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 |
|---|---|---|---|---|---|
| TOTOLINK | N350R | 1.2.3-B20130826 | — | No fix listed | CNA |
- N350R VendorTOTOLINK Affected 1.2.3-B20130826 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-8938
- 2026-10-03 Alias added: GHSA-3cc5-q36c-j82w
References
More TOTOLINK N350r Firmware vulnerabilities
- TI-2025-08184 TOTOLINK N350R formSysCmd command injection CVSS 4.0MEDIUM 5.3
Sources
- CVE-2025-8938 · CVE Program
- CVE-2025-8938 · NVD
- FIRST EPSS
- GHSA-3cc5-q36c-j82w · 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