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CVE-2021-35393

CRITICAL

9.8

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published8/16/2021

Last Modified8/13/2025

Sourcenvd

Honeypot Sightings0

Affected Products

realtek:rtl819x_jungle_software_development_kit

Weaknesses (CWE)

CWE-787

References

https://www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chain(cve@mitre.org)

https://www.realtek.com/en/cu-1-en/cu-1-taiwan-en(cve@mitre.org)

https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2021-35392_35395.pdf(cve@mitre.org)

https://www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chain(af854a3a-2127-422b-91ae-364da2661108)

https://www.realtek.com/en/cu-1-en/cu-1-taiwan-en(af854a3a-2127-422b-91ae-364da2661108)

https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2021-35392_35395.pdf(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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