CVE-2026-2874 HIGH

CVE-2026-2874: Tenda A21 fast_setting_wifi_set form_fast_setting_wifi_set stack-based overflow

Vendor Tenda
Product A21
Weakness CWE-121
Published February 21, 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 flaw has been found in Tenda A21 1.0.0.0. Impacted is the function form_fast_setting_wifi_set of the file /goform/fast_setting_wifi_set. Executing a manipulation of the argument ssid can lead to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been published and may be used.

Key dates

02Disclosure timeline

February 21, 2026 CVE published
February 23, 2026 Record updated