TP‑Link Archer NX Router Auth Bypass CVE‑2025‑15517

Executive Summary

A critical HTTP authentication bypass (CVE‑2025‑15517) allows privileged actions without login. Two command‑injection flaws further increase risk on compromised routers.

Key Details

Affected Platform

Attack Surface

Recommended Action

Affected Environment

TP‑Link Archer NX200, NX210, NX500, and NX600 routers running affected firmware builds. Exposure exists where these devices are deployed in your network.

Operational Impact

Compromise can change router configs, upload malicious firmware, and disrupt availability. This can weaken perimeter defenses and enable traffic manipulation or downtime.

Technical Root Cause

A missing authentication check on specific HTTP CGI endpoints permits privileged operations. Additional improper input handling in CLI commands enables command injection.

Recommended Mitigation

Immediately install the latest TP‑Link firmware for all Archer NX models in scope.
Disable remote administration where possible and enable update notifications going forward.

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Full Technical Report

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References

TP‑Link advisory and vendor FAQ describe fixed versions and patch steps. Public reporting details the CVEs and reinforces the need for prompt router firmware updates.