Totolink NR1800X POST Request cstecgi.cgi setWanCfg command injection
Published Jan 22, 2026 · Updated Oct 23, 2026
Original summary
Normalized public record · Updated Oct 23, 2026
Totolink NR1800X POST Request cstecgi.cgi setWanCfg command injection
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
A weakness has been identified in Totolink NR1800X 9.1.0u.6279_B20210910. This vulnerability affects the function setWanCfg of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. This manipulation of the argument Hostname causes command injection. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- LOW
- Confidence
- Not available
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- VDB-342302 | Totolink NR1800X POST Request cstecgi.cgi setWanCfg command injection ↗
- VDB-342302 | CTI Indicators (IOB, IOC, TTP, IOA) ↗
- Submit #735787 | TOTOLINK NR1800X NR1800X_Firmware V9.1.0u.6279_B20210910 Command Injection ↗
- lavender-bicycle-a5a.notion.site ↗
- www.totolink.net ↗
Record history
Published Jan 22, 2026 · Last refreshed Oct 23, 2026