CVE-2025-68706

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.

CVSS v3.1 Score

9.8

CRITICAL

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

Weakness Type (CWE)

CWE-121 CWE-121

Affected Products

Vendor	Product	Versions
kuwfi	ac900_firmware	All
kuwfi	ac900	All

References

Other 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

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2025-68706? +

CVE-2025-68706 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-68706? +

CVE-2025-68706 affects products from kuwfi, specifically: ac900, ac900_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-68706? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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