Check Point Advisories

Tenda RX3 Buffer Overflow (CVE-2025-5527)

Vulnerability
Protection

Check Point Reference:	CPAI-2025-0593
Date Published:	27 Jul 2025
Severity:	High
Last Updated:	Sunday 27 July, 2025
Source:
Industry Reference:	CVE-2025-5527
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Tenda RX3 16.03.13.11 and prior
Vulnerability Description	A buffer overflow vulnerability in Tenda RX3 allows remote attackers to execute arbitrary code by manipulating the argument list in the save_staticroute_data function of the file /goform/SetStaticRouteCfg.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the Tenda RX3 Buffer Overflow (CVE-2025-5527) protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Application Servers Protection Violation.
Attack Information: Tenda RX3 Buffer Overflow (CVE-2025-5527)