Check Point Advisories

Tenda AC20 Buffer Overflow (CVE-2025-14656)

Check Point Reference: CPAI-2025-18790
Date Published: 30 Sep 2026
Severity: High
Last Updated: Wednesday 30 September, 2026
Source:
Industry Reference:CVE-2025-14656
Protection Provided by:

Security Gateway
R82, R81, R80, R77, R75
Who is Vulnerable? Tenda AC20 16.03.08.12
Vulnerability Description A buffer overflow vulnerability in Tenda AC20 allows remote attackers to execute arbitrary code by manipulating the schedStartTime or schedEndTime arguments in the httpd function of the /goform/openSchedWifi 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 R82 / R81 / R80 / R77 / R75

  1. In the IPS tab, click Protections and find the Tenda AC20 Buffer Overflow (CVE-2025-14656) protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Application Servers Protection Violation.
Attack Information:  Tenda AC20 Buffer Overflow (CVE-2025-14656)

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