CVE-2026-36778

Medium severity, CVSS 4.9. EPSS: 0.5% chance of exploitation in the next 30 days.

Shenzhen Tenda Technology Co., Ltd Tenda O3 Wireless Router v1.0.0.5(4180) was discovered to contain a stack overflow in the username parameter of the R7WebsSecurityHandler function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted HTTP request.

Published 2026-06-09. Last modified 2026-07-23.