CVE-2026-5609: Tenda i12 Parameter wifiSSIDset formwrlSSIDset 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: 2026-04-06 · updated 2026-07-24
Weakness: CWE-119

Description

A flaw has been found in Tenda i12 1.0.0.11(3862). Affected by this vulnerability is the function formwrlSSIDset of the file /goform/wifiSSIDset of the component Parameter Handler. This manipulation of the argument index/wl_radio causes stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been published and may be used.

Affected products

Tenda i12: 1.0.0.11(3862)

References

https://github.com/Litengzheng/vuldb_new/blob/main/i12/vul_107/README.md
https://vuldb.com/submit/785337
https://vuldb.com/vuln/355400
https://vuldb.com/vuln/355400/cti
https://www.tenda.com.cn/

Get alerted when CVE-2026-5609 or the next vulnerability affects your stack