CVE-2026-36539 Information disclosure in n/a
Unauthenticated attackers on the LAN can retrieve sensitive router configuration data, including admin credentials and WiFi passwords, via a CGI endpoint.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-36539?
CVE-2026-36539 is a high-severity vulnerability in n/a, published on 27 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-200
Which versions are affected by CVE-2026-36539?
How do I fix CVE-2026-36539?
No fix has been published for CVE-2026-36539 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-36539 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-36539 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-qj5w-m4qh-7h99.