Check Point Advisories

D-Link DI-8100 Stack Overflow (CVE-2026-7851)

Check Point Reference: CPAI-2026-4171
Date Published: 14 May 2026
Severity: High
Last Updated: Thursday 14 May, 2026
Source:
Industry Reference:CVE-2026-7851
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable? D-Link DI-8100 16.07.26A1
Vulnerability Description A stack overflow vulnerability in D-Link DI-8100 allows remote attackers to execute arbitrary code by exploiting the sprintf function in the yyxz.asp 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

  1. In the IPS tab, click Protections and find the D-Link DI-8100 Stack Overflow (CVE-2026-7851) 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:  D-Link DI-8100 Stack Overflow (CVE-2026-7851)

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