CVE-2021-35393 Details
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.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chain | CVE | Broken LinkExploitThird Party Advisory |
| https://www.realtek.com/en/cu-1-en/cu-1-taiwan-en | CVE | Broken LinkPatchVendor Advisory |
| https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2021-35392_35395.pdf | CVE | PatchVendor Advisory |
| https://www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chain | [email protected] | Broken LinkExploitThird Party Advisory |
| https://www.realtek.com/en/cu-1-en/cu-1-taiwan-en | [email protected] | Broken LinkPatchVendor Advisory |
| https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2021-35392_35395.pdf | [email protected] | PatchVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-787 | Out-of-bounds Write | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| realtek rtl819x jungle software development kit | >= 2.0, <= 3.4.14b |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Aug 13, 2025 | Modified Analysis | [email protected] |
| Nov 21, 2024 | CVE Modified | CVE |
| May 14, 2024 | CVE Modified | [email protected] |
| Aug 26, 2021 | Initial Analysis | [email protected] |