CVE-2026-36539

High severity, CVSS 7.3. EPSS: 0.4% chance of exploitation in the next 30 days.

Netis AC1200 Router NC21 V4.0.1.4296 exposes a CGI endpoint /cgi-bin/skk_get.cgi that returns the entire router configuration as a JSON response with no authentication required. Any attacker on the LAN can send a single HTTP GET request and instantly retrieve administrator credentials, WiFi passwords, PPPoE credentials, DDNS credentials, and a full map of all connected devices.

Published 2026-05-27. Last modified 2026-06-17.