CVE-2026-36539

Published May 27, 2026 CVSS 3.1 · 7.3 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Netis
Netis ac1200 Router
Vendors & Products Netis
Netis ac1200 Router
Type Values Removed Values Added
Title Unauthorized Retrieval of Router Configuration via Unprotected CGI Endpoint
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Unauthorized Retrieval of Router Configuration via Unprotected CGI Endpoint
Weaknesses CWE-200
Type Values Removed Values Added
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
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
May 28, 2026, 1:36 PM
Reserved
Apr 6, 2026, 12:00 AM
Status
Deferred
Published
May 27, 2026, 2:16 PM
Modified
Jun 17, 2026, 10:41 AM