CVE-2026-36813
Description
A buffer overflow in Tenda W15E v15.11.0.10's formCropAndSetWewifiPic function allows DoS via crafted HTTP requests.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
A buffer overflow in Tenda W15E v15.11.0.10's formCropAndSetWewifiPic function allows DoS via crafted HTTP requests.
Vulnerability
A buffer overflow vulnerability exists in the formCropAndSetWewifiPic function of Shenzhen Tenda Technology Co., Ltd Tenda W15E firmware version v15.11.0.10 [1]. The vulnerability is triggered when the picCropName parameter, retrieved via websGetVar, is used in a sprintf call to construct a filename, leading to an overflow if the parameter is excessively long [1]. The vulnerable path is directly reachable.
Exploitation
An attacker can exploit this vulnerability by sending a crafted HTTP request to the formCropAndSetWewifiPic CGI endpoint. The request must include a picCropName parameter with a value significantly longer than expected, for example, a string of 888 or more characters [1]. No specific authentication or network position is mentioned as required beyond the ability to send HTTP requests to the device.
Impact
Successful exploitation of this vulnerability can lead to a Denial of Service (DoS) condition. This may manifest as a process crash or general device instability, rendering the device inoperable for legitimate users [1].
Mitigation
No patched version or specific mitigation details are available in the provided references. The vulnerability was publicly disclosed on 2026-06-06 [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