CVE-2026-11503: Tenda CX12L Wi-Fi Configuration Endpoint 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: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-08 · updated 2026-07-23
Weakness: CWE-119

Description

A security vulnerability has been detected in Tenda CX12L 16.03.53.12. The affected element is the function form_fast_setting_wifi_set of the file /goform/fast_setting_wifi_set of the component Wi-Fi Configuration Endpoint. Such manipulation of the argument ssid leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed publicly and may be used.

Affected products

Tenda CX12L: 16.03.53.12

References

https://github.com/cve-a/moist/issues/1
https://vuldb.com/cve/CVE-2026-11503
https://vuldb.com/submit/835648
https://vuldb.com/vuln/369123
https://vuldb.com/vuln/369123/cti
https://www.tenda.com.cn/

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