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CVE-2026-36784

Stack Overflow in Tenda O3 Router's fromNetToolGet Function Causes DoS

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

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Tenda
Products
O3 Wireless Router
CVE-2026-36783

Stack Overflow in fromNetToolGet Causes DoS on Tenda O3 Router

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

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Tenda
Products
O3 Wireless Router
CVE-2026-36779

Tenda O3 Router Stack Overflow Enables Remote Denial of Service

Shenzhen Tenda Technology Co., Ltd Tenda O3 Wireless Router v1.0.0.5(4180) was discovered to contain multiple stack overflows in the fromVirtualSer function via the puVar2, puVar1, __s2, __s1_00, and puVar3 parameters. These vulnerabilities allow attackers to cause a Denial of Service (DoS) via a crafted HTTP request.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Tenda
Products
O3 Wireless Router
CVE-2026-36778

Stack Overflow in Username Parameter Causes DoS on Tenda O3 Wireless Router

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.

CVSS 3.1 · 4.9 Medium EPSS < 1% KEV · Not listed
Vendors
Tenda
Products
O3 Wireless Router