CVE-2026-36778
Medium
Description
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.
SeverityMedium
CVSS4.9
Exploit probability—
ProductTenda O3 Wireless Router
PublishedJun 9, 2026
First seenJun 9, 2026
Weakness typeCWE-121CWE-121
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Shenzhen Tenda Technology Co., Ltd Tenda O3 Wireless Router | 1.0.0.5(4180) | — |
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