Command Injection Vulnerability in TRENDnet TEW-821DAP
CVE-2026-76582

5.3MEDIUM

Key Information:

Vendor

Trendnet

Status
Tew-821dap
Vendor
CVE Published:
19 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-76582?

A command injection vulnerability exists in the TRENDnet TEW-821DAP due to improper handling of the 'ipaddr' argument in the /cgi-bin/ping.cgi script within the ssi component. This flaw allows attackers to execute arbitrary system commands remotely, posing a significant risk to users. As the exploit is publicly disclosed, immediate attention and remediation are crucial to mitigate potential threats.

Affected Version(s)

TEW-821DAP 2.2.01b05

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-2026-76582 - Proof of Concept

References

https://vuldb.com/vuln/393041
vdb-entrytechnical-description
https://vuldb.com/vuln/393041/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-76582
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

fuhanhan2015 (VulDB User)
.