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CVE-2021-35392

Published: Aug 16, 2021Updated: Aug 13, 2025 Sources: CVE List NVD BDUCWE-787
7.5HIGH
NVD MITRE
EPSS Score
83.2%
Top 0.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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 heap buffer overflow that is present due to unsafe crafting of SSDP NOTIFY messages from received M-SEARCH messages ST header.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-787

Affected Products

Realtek Semiconductor Corp.
commercial·TWaka realtek, realtek sdk, rtsper.sys, rtl819x jungle sdk, realtek “luna” sdk, rtl8195a firmware, rtl819x jungle software development kit
Realtek SDKEmbedded
Hardware Firmware / network-adapter
Realtek “Luna” SDKEmbedded
Hardware Firmware / network-adapter
rtl819x jungle software development kitEmbedded
Hardware Firmware / network-adapter
and 1 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2021-35392?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://www.realtek.com/en/cu-1-en/cu-1-taiwan-en
realtek.com
https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2021-35392_35395.pdf
realtek.com
https://www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chain
iot-inspector.com
and 4 more references View all →

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