VULNERABILITY INTELLIGENCE
CVE-2021-35393
CVSS score9.8 CRITICAL
EPSS probability66.39%
CISA KEVNot currently listed
Published2021-08-16
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
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 stack buffer overflow vulnerability that is present due to unsafe parsing of the UPnP SUBSCRIBE/UNSUBSCRIBE Callback header. Successful exploitation of this vulnerability allows remote unauthenticated attackers to gain arbitrary code execution on the affected device.
Weakness classification
- nvd@nist.gov: CWE-787
Primary references
- cve@mitre.org — Broken Link, Exploit, Third Party Advisory
- cve@mitre.org — Broken Link, Patch, Vendor Advisory
- cve@mitre.org — Patch, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Broken Link, Exploit, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Broken Link, Patch, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Patch, Vendor Advisory