CVE-2025-15517: TP-Link Archer NX200 Firmware

High severity, CVSS 8.1. EPSS: 3% chance of exploitation in the next 30 days.

A missing authentication check in the HTTP server on TP-Link Archer NX200, NX210, NX500 and NX600 to certain cgi endpoints allows unauthenticated access intended for authenticated users. An attacker may perform privileged HTTP actions without authentication, including firmware upload and configuration operations.

Affected products

• TP-Link Archer NX200 Firmware: before 1.3.0 (fixed in 1.3.0); before 1.8.0 (fixed in 1.8.0)
• TP-Link Archer NX210 Firmware: before 1.3.0 (fixed in 1.3.0)
• TP-Link Archer NX500 Firmware: before 1.5.0 (fixed in 1.5.0); before 1.3.0 (fixed in 1.3.0)
• TP-Link Archer NX600 Firmware: before 1.3.0 (fixed in 1.3.0); before 1.4.0 (fixed in 1.4.0)

Published 2026-03-23. Last modified 2026-06-17.