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

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-02-21 · updated 2026-06-17
Weakness: CWE-119

Description

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.

Affected products

Tenda A21: 1.0.0.0

References

https://github.com/QIU-DIE/cve-nneeww/issues/5
https://vuldb.com/?ctiid.347111
https://vuldb.com/?id.347111
https://vuldb.com/?submit.754636
https://www.tenda.com.cn/

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