Check Point Advisories

Tenda AC23 Buffer Overflow (CVE-2026-0640)

Vulnerability
Protection

Check Point Reference:	CPAI-2026-1867
Date Published:	26 Mar 2026
Severity:	Critical
Last Updated:	Thursday 26 March, 2026
Source:
Industry Reference:	CVE-2026-0640
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Tenda AC23 16.03.07.52
Vulnerability Description	A buffer overflow vulnerability in Tenda AC23 allows remote attackers to execute arbitrary code by manipulating the Time argument in the /goform/PowerSaveSet function.

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 AC23 Buffer Overflow (CVE-2026-0640) 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 AC23 Buffer Overflow (CVE-2026-0640)