Stack-Based Buffer Overflow in TRENDnet TEW-432BRP Router
CVE-2026-10123

8.7HIGH

Key Information:

Vendor

Trendnet

Status
Tew-432brp
Vendor
CVE Published:
30 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-10123?

A stack-based buffer overflow vulnerability has been identified in the TRENDnet TEW-432BRP router, specifically affecting the function formSetDomainFilter located in /goform/formSetDomainFilter. By manipulating the arguments for blocked_domain, permitted_domain, blocked_domain_list, or permitted_domain_list, an attacker can exploit this vulnerability remotely. This router model has been end-of-life since 2009, and as such, TRENDnet has stated it cannot replicate or provide fixes for vulnerabilities found in this product.

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-2026-10123 - Proof of Concept

References

https://vuldb.com/vuln/367300
vdb-entrytechnical-description
https://vuldb.com/vuln/367300/cti
signaturepermissions-required
https://vuldb.com/submit/814767
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
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_Buoy (VulDB User)
VulDB CNA Team
.