CVE-2026-36778 — MEDIUM (4.9)

Vulnerability 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.

CVSS Score

4.9

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Related Weaknesses (CWE)

CWE-121

References

https://github.com/xhh0124/SemVulLLM/tree/main/O3/R7WebsSecurityHandler

FAQ

What is CVE-2026-36778?

CVE-2026-36778 is a vulnerability with a CVSS score of 4.9 (MEDIUM). 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 vulnerabilit...

How severe is CVE-2026-36778?

CVE-2026-36778 has been rated MEDIUM with a CVSS base score of 4.9/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-36778?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.