Command Injection Vulnerability in TRENDnet TEW-821DAP Firmware
CVE-2026-7609

5.3MEDIUM

Key Information:

Vendor

Trendnet

Status
Tew-821dap
Vendor
CVE Published:
2 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7609?

A vulnerability in the TRENDnet TEW-821DAP device's diagnostic tool exposes users to potential os command injection attacks. The flaw is located in the firmware's diagnostic function, specifically within the '/tmp/diagnostic' file, allowing malicious actors to execute arbitrary commands remotely. As this issue pertains to a product that has reached its end-of-life (EOL) eight years ago and is no longer supported, prompt mitigation is imperative for current users to prevent exploitation.

Affected Version(s)

TEW-821DAP 1.12B01

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-7609 - Proof of Concept

References

https://vuldb.com/vuln/360566
vdb-entrytechnical-description
https://vuldb.com/vuln/360566/cti
signaturepermissions-required
https://vuldb.com/submit/806216
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

IOT_Res (VulDB User)
VulDB CNA Team
.