CVE-2026-2909 HIGH

CVE-2026-2909: Tenda HG9 Diagnostic Ping Endpoint formPing stack-based overflow

Vendor Tenda
Product HG9
Weakness CWE-121
Published February 22, 2026
Last update February 23, 2026
View on NVD All CVEs

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 vulnerability was detected in Tenda HG9 300001138. This affects an unknown part of the file /boaform/formPing of the component Diagnostic Ping Endpoint. Performing a manipulation of the argument pingAddr results in stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit is now public and may be used.

Key dates

02Disclosure timeline

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