Vulnerability Monitor

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CVE-2021-35392

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.

Published

2021-08-16T12:15:07.193

Last Modified

2025-08-13T15:22:50.020

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: COMPLETE

Exploitability Score

10.0

Impact Score

6.9

Weaknesses

Type: Primary
CWE-787

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	realtek	rtl819x_jungle_software_development_kit	≤ 3.4.14b	Yes

References

https://www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chain Exploit, Third Party Advisory, Broken Link ([email protected])
https://www.realtek.com/en/cu-1-en/cu-1-taiwan-en Patch, Vendor Advisory, Broken Link ([email protected])
https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2021-35392_35395.pdf Patch, Vendor Advisory ([email protected])
https://www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chain Exploit, Third Party Advisory, Broken Link (af854a3a-2127-422b-91ae-364da2661108)
https://www.realtek.com/en/cu-1-en/cu-1-taiwan-en Patch, Vendor Advisory, Broken Link (af854a3a-2127-422b-91ae-364da2661108)
https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2021-35392_35395.pdf Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)