CVE-2025-15517 is a high-severity vulnerability affecting TP-Link Archer NX600 v3.0 and related models, caused by missing authentication checks on certain HTTP CGI endpoints. This flaw allows unauthenticated attackers to perform privileged actions such as firmware uploads and configuration changes without requiring any credentials or user interaction. The vulnerability impacts multiple models including NX200, NX210, NX500, and NX600, exposing critical router management functions to remote exploitation. The CVSS 4.0 score of 8.6 reflects the high impact on confidentiality and integrity with no authentication or user interaction needed, though the attack vector is adjacent network. No known exploits are currently reported in the wild. Organizations using these TP-Link devices risk unauthorized control over network infrastructure, potentially leading to persistent compromise, network disruption, or interception of sensitive data. Mitigation requires immediate firmware updates from the vendor once available, network segmentation to limit access to router management interfaces, and monitoring for suspicious HTTP requests targeting vulnerable endpoints.