Stack-Based Buffer Overflow in TRENDnet TEW-432BRP Router
CVE-2026-109157

9.4CRITICAL

Key Information:

Vendor

Trendnet

Status
Tew-432brp
Vendor
CVE Published:
13 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-109157?

A stack-based buffer overflow vulnerability has been identified in the TRENDnet TEW-432BRP router, specifically within the formTcpipSetup function in the /goform/formTcpipSetup file. This vulnerability allows for remote exploitation through manipulation of the Name argument. Although the vendor has stated that the router reached its End of Life in 2011 and cannot test for the existence of the vulnerability, the public exploit could potentially expose users to significant security risks. Affected users are advised to consider the implications of using unsupported products.

Affected Version(s)

TEW-432BRP 3.10B20

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-2026-109157 - Proof of Concept

References

https://vuldb.com/vuln/416890
vdb-entrytechnical-description
https://vuldb.com/vuln/416890/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-109157
third-party-advisory

CVSS V4

Score:
9.4
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
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

pjqwudi (VulDB User)
VulDB CNA Team
.