CVE-2026-2874

Tenda A21 fast_setting_wifi_set form_fast_setting_wifi_set stack-based overflow

CVSS 8.7 HIGHEPSS 0.6%CWE-119 CWE-121

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.7EPSS 0.6%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

21 Feb 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

Tenda · A21

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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/