CVE-2026-36819
Description
Tenda W20E v15.11.0.6 has a buffer overflow in bindMACAddr, allowing DoS via crafted HTTP requests.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Tenda W20E v15.11.0.6 has a buffer overflow in bindMACAddr, allowing DoS via crafted HTTP requests.
Vulnerability
A buffer overflow vulnerability exists in the fromSetDhcpRules function of Shenzhen Tenda Technology Co., Ltd Tenda W20E version 15.11.0.6. The vulnerability is triggered by the bindMACAddr parameter, which is not properly handled by the snprintf function, leading to a buffer overflow when processing user-influenced HTTP requests [1].
Exploitation
An attacker can exploit this vulnerability by sending a crafted HTTP request to the fromSetDhcpRules CGI endpoint. The request must include a long value for the bindMACAddr parameter, such as a*888 or longer, to trigger the buffer overflow [1].
Impact
Successful exploitation of this vulnerability can lead to a Denial of Service (DoS) by causing the affected process to crash or leading to device instability. The scope of the impact is limited to the device itself [1].
Mitigation
No patched version or specific mitigation details are available in the provided references. The latest version mentioned is V16.01.0.6 [1].
AI Insight generated on Jun 9, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
No source-code context for this CVE — mechanics is only generated when we can read the actual fix diff. Without that, the four sections (root cause, attack vector, affected code, fix) would be speculation rather than analysis.
References
1News mentions
0No linked articles in our index yet.