CVE-2026-36539: n/a
The Netis AC1200 Router NC21 version 4. 0. 1. 4296 contains a vulnerability where an unauthenticated CGI endpoint (/cgi-bin/skk_get. cgi) exposes the entire router configuration in JSON format. This includes sensitive information such as administrator credentials, WiFi passwords, PPPoE credentials, DDNS credentials, and details of all connected devices. Any attacker with access to the local network can exploit this by sending a single HTTP GET request to retrieve this data. There is no authentication or access control on this endpoint, making the exposure immediate and severe. No patch or official remediation information is currently available. This vulnerability affects only local network attackers and requires LAN access.
AI Analysis
Technical Summary
CVE-2026-36539 describes a critical information disclosure vulnerability in the Netis AC1200 Router NC21 firmware version 4.0.1.4296. The router exposes a CGI endpoint (/cgi-bin/skk_get.cgi) that returns the full router configuration, including highly sensitive credentials and network device information, without requiring any authentication. This allows any attacker on the local network to retrieve administrator and user credentials by issuing a single HTTP GET request. The vulnerability is due to improper access control on the configuration endpoint. No CVSS score or patch information is currently available.
Potential Impact
An attacker with local network access can obtain full administrative credentials, WiFi passwords, PPPoE and DDNS credentials, and a complete map of connected devices. This compromises the confidentiality and integrity of the router and the network it manages, potentially allowing further network compromise or unauthorized access. The exposure is immediate and does not require user interaction or authentication.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict local network access to trusted users only and consider isolating the router management interface from untrusted devices. Monitor vendor channels for updates or firmware patches addressing this vulnerability.
CVE-2026-36539: n/a
Description
The Netis AC1200 Router NC21 version 4. 0. 1. 4296 contains a vulnerability where an unauthenticated CGI endpoint (/cgi-bin/skk_get. cgi) exposes the entire router configuration in JSON format. This includes sensitive information such as administrator credentials, WiFi passwords, PPPoE credentials, DDNS credentials, and details of all connected devices. Any attacker with access to the local network can exploit this by sending a single HTTP GET request to retrieve this data. There is no authentication or access control on this endpoint, making the exposure immediate and severe. No patch or official remediation information is currently available. This vulnerability affects only local network attackers and requires LAN access.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-36539 describes a critical information disclosure vulnerability in the Netis AC1200 Router NC21 firmware version 4.0.1.4296. The router exposes a CGI endpoint (/cgi-bin/skk_get.cgi) that returns the full router configuration, including highly sensitive credentials and network device information, without requiring any authentication. This allows any attacker on the local network to retrieve administrator and user credentials by issuing a single HTTP GET request. The vulnerability is due to improper access control on the configuration endpoint. No CVSS score or patch information is currently available.
Potential Impact
An attacker with local network access can obtain full administrative credentials, WiFi passwords, PPPoE and DDNS credentials, and a complete map of connected devices. This compromises the confidentiality and integrity of the router and the network it manages, potentially allowing further network compromise or unauthorized access. The exposure is immediate and does not require user interaction or authentication.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict local network access to trusted users only and consider isolating the router management interface from untrusted devices. Monitor vendor channels for updates or firmware patches addressing this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-04-06T00:00:00.000Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a16f9d0e29bf47b50c0e781
Added to database: 5/27/2026, 2:04:00 PM
Last enriched: 5/27/2026, 3:19:38 PM
Last updated: 5/27/2026, 6:36:19 PM
Views: 2
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