Buffer overflow in Realtek Rtl819x Jungle Software Development Kit
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.832 (99.7th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.832 · newest: 0.832 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.realtek.com/en/cu-1-en/cu-1-taiwan-en (Patch, Broken Link, Vendor Advisory)
- www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2021-35392… (Patch, Vendor Advisory)
- www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chain (Exploit, Third Party Advisory, Broken Link)
Frequently asked questions
- What is CVE-2021-35392?
- CVE-2021-35392 is a high-severity vulnerability in Realtek Rtl819x Jungle Software Development Kit, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2021-08-16.
- How severe is CVE-2021-35392?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-35392 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.