CVE-2025-68706

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.

CVSS 3.1

9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

5.0% chance of exploitation in the next 30 days; higher than 92% of CVEs (scores of 2026-10-25)

CWE

CWE-121

Published

2025-12-29

Modified

2026-10-13

Record from

the NVD, synced 2026-10-19

Affected

• kuwfi:ac900_firmware

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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