Check Point Advisories

TRENDnet TEW-827DRU Authentication Bypass (CVE-2021-20157; CVE-2021-20158)

Check Point Reference: CPAI-2021-2138
Date Published: 14 Mar 2024
Severity: Critical
Last Updated: Thursday 14 March, 2024
Industry Reference:CVE-2021-20157
Protection Provided by:

Security Gateway
R81, R80, R77, R75

Who is Vulnerable? TRENDnet TEW-827DRU firmware
Vulnerability Description An authentication bypass vulnerability exists in TRENDnet TEW-827DRU. Successful exploitation of this vulnerability would allow remote attackers to gain unauthorized access into the affected system.

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 TRENDnet TEW-827DRU Authentication Bypass 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:  Web Server Enforcement Violation.
Attack Information:  TRENDnet TEW-827DRU Authentication Bypass

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