CVE-2026-36784
Description
Tenda O3 Wireless Router v1.0.0.5(4180) has a stack overflow in the fromNetToolGet function's ip parameter, allowing DoS via HTTP requests.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Tenda O3 Wireless Router v1.0.0.5(4180) has a stack overflow in the fromNetToolGet function's ip parameter, allowing DoS via HTTP requests.
Vulnerability
A stack-based buffer overflow vulnerability exists in the fromNetToolGet function within the fromNetToolGet CGI handler of Shenzhen Tenda Technology Co., Ltd Tenda O3 Wireless Router, specifically affecting version v1.0.0.5(4180) [1]. This vulnerability is reachable when the ip parameter is processed by websGetVar and subsequently copied using strcpy without proper bounds checking [1].
Exploitation
An attacker can exploit this vulnerability by sending a crafted HTTP request to the fromNetToolGet CGI endpoint. The request must include a malicious value for the ip parameter, such as ip=aaaaaa*88.., to trigger the buffer overflow [1]. Network access to the device is required.
Impact
Successful exploitation of this vulnerability can lead to a Denial of Service (DoS) condition. This may manifest as a process crash or device instability, rendering the router inoperable [1].
Mitigation
No patched version or specific mitigation details are disclosed in the available references. The vulnerability affects Tenda O3 v1.0.0.5(4180) [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
1- Range: =1.0.0.5(4180)
Patches
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
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