CVE-2025-5736

TOTOLINK · X15

A buffer overflow vulnerability in the TOTOLINK X15 firmware's /boafrm/formNtp endpoint can be exploited via the 'submit-url' argument.

Executive summary

A critical buffer overflow vulnerability in the TOTOLINK X15 router firmware allows for memory corruption, risking unauthorized device access.

Vulnerability

This is a buffer overflow vulnerability within the /boafrm/formNtp endpoint of the HTTP POST Request Handler. Manipulation of the 'submit-url' argument can lead to memory corruption.

Business impact

The CVSS score of 8.8 highlights the significant danger this vulnerability poses to business operations. Exploitation could lead to unauthorized access to the network, potentially resulting in data exfiltration or service disruption, severely impacting organizational security.

Remediation

Immediate Action: Apply the latest firmware update for the TOTOLINK X15 device to address this vulnerability.

Proactive Monitoring: Review access logs for abnormal inputs directed at the /boafrm/formNtp endpoint.

Compensating Controls: Restrict access to the router's web-based management interface to authorized personnel only via internal network segments.

Exploitation status

Public Exploit Available: True

Analyst recommendation

The combination of a high CVSS score and available public exploit code makes this a critical security concern. Organizations must prioritize updating their firmware to eliminate this vulnerability and protect their network environment.