CVE-2025-68706

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-12-29 · updated 2026-10-13
Weakness: CWE-121

Description

A stack-based buffer overflow exists in the GoAhead-Webs HTTP daemon on KuWFi 4G LTE AC900 devices with firmware 1.0.13. The /goform/formMultiApnSetting handler uses sprintf() to copy the user-supplied pincode parameter into a fixed 132-byte stack buffer with no bounds checks. This allows an attacker to corrupt adjacent stack memory, crash the web server, and (under certain conditions) may enable arbitrary code execution.

Affected products

Kuwfi Ac900 Firmware: 1.0.13

References

https://drive.proton.me/urls/HJCJYAC7JM#XtHcm3P7QaYk
https://github.com/actuator/cve/blob/main/Kuwfi/CVE-2025-68706.txt
https://github.com/actuator/cve/tree/main/Kuwfi
https://kuwfi.com/products/kuwfi-gigabit-wireless-router-4g-lte-wifi-router-dual-band-portable-wifi-modem-hotspot-64-user-with-gigabit-wan-lan-rj11-port

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