CVE-2026-2908 HIGH

CVE-2026-2908: Tenda HG9 Loopback Detection Configuration Endpoint formLoopBack stack-based overflow

Vendor Tenda
Product HG9
Weakness CWE-121
Published February 22, 2026
Last update February 23, 2026

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A security vulnerability has been detected in Tenda HG9 300001138. Affected by this issue is some unknown functionality of the file /boaform/formLoopBack of the component Loopback Detection Configuration Endpoint. Such manipulation of the argument Ethtype leads to stack-based buffer overflow. The attack can be executed remotely. The exploit has been disclosed publicly and may be used.

Key dates

02Disclosure timeline

February 22, 2026 CVE published
February 23, 2026 Record updated