Check Point Advisories

Tenda CH22 Buffer Overflow (CVE-2025-9813)

Vulnerability
Protection

Check Point Reference:	CPAI-2025-7629
Date Published:	10 Dec 2025
Severity:	High
Last Updated:	Wednesday 10 December, 2025
Source:
Industry Reference:	CVE-2025-9813
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Tenda CH22 1.0.0.1
Vulnerability Description	A buffer overflow vulnerability in Tenda CH22 allows remote attackers to execute arbitrary code by manipulating the samba_userNameSda argument in the formSetSambaConf function of the /goform/SetSambaConf file.

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 CH22 Buffer Overflow (CVE-2025-9813) 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 CH22 Buffer Overflow (CVE-2025-9813)