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.

CVSS v3 7.5 HIGH
CVSS v2.0 7.8 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

7.8^/10

CVSS v2.0 : HIGH

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

Exploitability : 10.0 / Impact : 6.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References

Link	Resource
https://www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chain	Exploit Third Party Advisory Broken Link
https://www.realtek.com/en/cu-1-en/cu-1-taiwan-en	Patch Vendor Advisory Broken Link
https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2021-35392_35395.pdf	Patch Vendor Advisory
https://www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chain	Exploit Third Party Advisory Broken Link
https://www.realtek.com/en/cu-1-en/cu-1-taiwan-en	Patch Vendor Advisory Broken Link
https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2021-35392_35395.pdf	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:realtek:rtl819x_jungle_software_development_kit:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-08-16 12:15

Updated : 2025-08-13 15:22

NVD link : CVE-2021-35392

Mitre link : CVE-2021-35392

CVE.ORG link : CVE-2021-35392

JSON object : View

Products Affected

realtek

rtl819x_jungle_software_development_kit

CWE

CWE-787

Out-of-bounds Write

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