CVE-2021-35392: Realtek RTL819X Jungle Software Development Kit

High severity, CVSS 7.5. EPSS: 83.2% chance of exploitation in the next 30 days.

Realtek Jungle SDK version v2.x up to v3.4.14B provides a 'WiFi Simple Config' server that implements both UPnP and SSDP protocols. The binary is usually named wscd or mini_upnpd and is the successor to miniigd. The server is vulnerable to a heap buffer overflow that is present due to unsafe crafting of SSDP NOTIFY messages from received M-SEARCH messages ST header.

Affected products

• Realtek RTL819X Jungle Software Development Kit: from 2.0, up to and including 3.4.14b

Published 2021-08-16. Last modified 2026-06-17.