An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may exploit the vulnerability by controlling the value of `picName`. When this value is used in `sprintf` without validating variable sizes, it could lead to a buffer overflow vulnerability.
https://www.tenda.com.cn/material/show/2707
https://github.com/akuma-QAQ/CVEreport/tree/main/D-link/CVE-2026-24109