CVE-2026-36810
Description
A buffer overflow in Tenda W15E v15.11.0.10's formPortalAuth function allows DoS via a crafted HTTP request.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
A buffer overflow in Tenda W15E v15.11.0.10's formPortalAuth function allows DoS via a crafted HTTP request.
Vulnerability
A buffer overflow vulnerability exists in the formPortalAuth function of Shenzhen Tenda Technology Co., Ltd Tenda W15E version v15.11.0.10. The vulnerability is triggered when processing the gotoUrl parameter, which is retrieved using websGetVar and then copied into a buffer using strcpy without proper bounds checking. The vulnerable path is reachable via a standard HTTP request [1].
Exploitation
An attacker can exploit this vulnerability by sending a crafted HTTP request to the formPortalAuth CGI endpoint. The request must include a gotoUrl parameter with a value exceeding the allocated buffer size, for example, a string of 888 or more characters. This can be achieved without any special privileges or user interaction [1].
Impact
Successful exploitation of this vulnerability can lead to a Denial of Service (DoS). This may manifest as a process crash or general device instability, rendering the device unusable for its intended purpose [1].
Mitigation
No patched version or specific mitigation details have been disclosed in the available references. The affected version is v15.11.0.10 [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
1- Tenda W15E: Ten Buffer Overflow Vulnerabilities Disclosed TogetherVypr Intelligence · Jun 9, 2026