What is CVE-2026-36778?

CVE-2026-36778 is a medium-severity vulnerability, classified under Stack-based Buffer Overflow. CVSS score: 4.9/10. Published 2026-06-09.

How severe is CVE-2026-36778?

Medium severity. CVSS v3 base score is 4.9 out of 10.

CVE-2026-36778

CVE-2026-36778

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…

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

cve@mitre.org

Frequently asked questions

What is CVE-2026-36778?: CVE-2026-36778 is a medium-severity vulnerability, classified under Stack-based Buffer Overflow. CVSS score: 4.9/10. Published 2026-06-09.
How severe is CVE-2026-36778?: Medium severity. CVSS v3 base score is 4.9 out of 10.