CVE-2026-36778

Name: CVE-2026-36778
Creator: NVD / NIST
Published: 2026-06-09T19:17:44.09+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.9/10EPSS 0.37%

Last modified Jun 17, 2026

CVE-2026-36778 is a medium-severity vulnerability rated 4.9/10 on the CVSS scale. 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.. EPSS estimates a 0.37% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

4.9/10

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

EPSS Probability

0.37%

28.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-121

References

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

Timeline

Published: Jun 9, 2026
Last Modified: Jun 17, 2026
Status: Deferred

Frequently Asked Questions

What is CVE-2026-36778?

How severe is CVE-2026-36778?

CVE-2026-36778 has a CVSS score of 4.9/10 (MEDIUM severity). The EPSS model estimates a 0.37% probability of exploitation in the next 30 days.

How do I fix CVE-2026-36778?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-36778?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST