CVE-2026-36539

HIGH

Netis AC1200 Router NC21 V4.0.1.4296 - Unauthenticated Information Disclosure via skk_get.cgi

Title source: llm

Description

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.

References (1)

Core 1

Core References

https://github.com/sir3ns/cve-disclosure/blob/main/CVE-2026-36539/readme.md

View Writeup ZIP pw:eip

Scores

CVSS v3 7.3

EPSS 0.0036

EPSS Percentile 27.5%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact partial

Details

CWE

CWE-200

Status published

Published May 27, 2026

Tracked Since May 27, 2026