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CVE-2020-26728

9.8 · CRITICAL
Published Feb 11, 2022 tenda EPSS 3.77% (89th pctl)

Overview

CVE-2020-26728 is a critical-severity vulnerability affecting tenda ac9_firmware. It was published on February 11, 2022 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical Description

A vulnerability was discovered in Tenda AC9 v3.0 V15.03.06.42_multi and Tenda AC9 V1.0 V15.03.05.19(6318)_CN which allows for remote code execution via shell metacharacters in the guestuser field to the __fastcall function with a POST request.

Remediation

Check the references section for vendor advisories and patches from tenda. Update ac9_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

Vendor Product Versions Status

Frequently Asked Questions

What is CVE-2020-26728?

CVE-2020-26728 is a critical-severity vulnerability affecting tenda ac9_firmware. It was published on February 11, 2022 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2020-26728?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2020-26728?

Check the references section for vendor advisories and patches from tenda. Update ac9_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2020-26728?

CyberStrike's AI-powered security agents can automatically detect CVE-2020-26728 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.