CVE intelligence and bounded remediation

CVE-2025-15605 — Tp-Link Archer Nx600 Firmware security vulnerability

High CVSS 8.5

A hardcoded cryptographic key within the configuration mechanism on TP-Link Archer NX200, NX210, NX500 and NX600 enables decryption and re-encryption of device configuration data. An authenticated attacker may decrypt configuration files, modify them, and re-encrypt them, affecting the confidentiality and integrity of device configuration data.

Severity
High
CVSS
8.5 (4.0)
Published
2026-03-23
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-321, CWE-798

Affected products

  • tp-link / archer_nx600_firmware
  • tp-link / archer_nx500_firmware
  • tp-link / archer_nx210_firmware
  • tp-link / archer_nx200_firmware

Showing 4 representative product identities from 10 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Authentication bypass and missing authentication

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Check exposure

  • Map every affected endpoint and protocol path, including alternate ports, legacy routes, recovery flows, service accounts, and machine-to-machine access.
  • Confirm which deployments enable the affected authentication mode and whether the interface is reachable from untrusted networks.
  • Review session, token, credential, and proxy trust configuration without attempting account takeover.

Remediate safely

  • Apply the supported fix and centralize fail-closed authentication before protected request handling.
  • Remove default or embedded credentials, rotate affected secrets and sessions, and bind authentication decisions to the intended audience and channel.
  • Add negative tests for alternate routes, malformed or absent credentials, recovery flows, and proxy-derived identity.

Authoritative sources

Complete CVE record and remediation plan

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