---
id: CVE-2026-77945
title: A vulnerability was found in TRENDnet TEW-821DAP 2.2.01b05
summary: >-
  A vulnerability was found in TRENDnet TEW-821DAP 2.2.01b05. Affected is an
  unknown function of the file /cgi-bin/upload.cgi of the component ssi.
  Performing a manipulation of the argument filename results in command
  injection. The attack…
severity: high
cvss: 7.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L'
cwe:
  - CWE-74
  - CWE-77
published: '2026-08-22'
updated: '2026-08-22'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77945'
references:
  - url: >-
      https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/TEW-821DAP_ssi_Arbitrary_File_Command_Injection.md
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-77945'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/881248'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/394174'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/394174/cti'
    label: cna@vuldb.com
tags:
  - nvd
ingestedAt: '2026-08-23T04:42:13.788Z'
epss: 0.01284
epssPercentile: 0.68812
---

## Overview

A vulnerability was found in TRENDnet TEW-821DAP 2.2.01b05. Affected is an unknown function of the file /cgi-bin/upload.cgi of the component ssi. Performing a manipulation of the argument filename results in command injection. The attack may be initiated remotely. The exploit has been made public and could be used.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.