Command Injection Vulnerability in TRENDnet Wireless Access Point
CVE-2026-77945

5.3MEDIUM

Key Information:

Vendor

Trendnet

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-77945?

A command injection vulnerability exists in the TRENDnet TEW-821DAP version 2.2.01b05, specifically in the functionality of the /cgi-bin/upload.cgi file related to the ssi component. By manipulating the filename parameter, an attacker can execute arbitrary commands remotely, posing a significant risk to network security. Exploits for this vulnerability have been publicly disclosed, which increases the urgency for users to secure their devices.

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-2026-77945 - Proof of Concept

References

https://vuldb.com/vuln/394174
vdb-entrytechnical-description
https://vuldb.com/vuln/394174/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-77945
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

ST4R0002 (VulDB User)
.