CVE-2026-36783
Description
Tenda O3 Wireless Router v1.0.0.5(4180) has a stack overflow in fromNetToolGet, allowing DoS via crafted 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 fromNetToolGet, allowing DoS via crafted HTTP requests.
Vulnerability
A stack-based buffer overflow vulnerability exists in the domain parameter of the fromNetToolGet function within Shenzhen Tenda Technology Co., Ltd Tenda O3 Wireless Router v1.0.0.5(4180) [1]. This vulnerability is reachable when the fromNetToolGet CGI handler processes the traceroute workflow, specifically when the hop parameter is set to 1 and the request satisfies certain string comparison conditions [1].
Exploitation
An attacker can exploit this vulnerability by sending a crafted HTTP request to the fromNetToolGet CGI endpoint. The request must include specific parameters such as domain=telnetd -l /bin/sh -p 7890, hop=1, and pingMode=tranceroute to trigger the vulnerable code path [1].
Impact
Successful exploitation of this vulnerability can lead to a Denial of Service (DoS) due to a process crash or device instability [1]. The vulnerability also presents a potential for arbitrary code execution [1].
Mitigation
No patched version or specific mitigation details are available in the provided references. The affected version is Tenda O3 Wireless Router 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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