Stack-Based Buffer Overflow in TRENDnet TEW-632BRP Router
CVE-2026-4172

8.6HIGH

Key Information:

Vendor

Trendnet

Status
Tew-632brp
Vendor
CVE Published:
15 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-4172?

A significant stack-based buffer overflow vulnerability exists in the TRENDnet TEW-632BRP router, specifically within the /ping_response.cgi component of the HTTP POST Request Handler. This vulnerability arises from improper handling of the 'ping_ipaddr' argument, enabling attackers to execute arbitrary code remotely. Publicly disclosed exploits pose a heightened risk, as potential attackers can leverage this weakness without prior authentication. Despite early notification to TRENDnet, there has been no official response regarding mitigation or patches.

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Affected Version(s)

TEW-632BRP 1.010B32

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-2026-4172 - Proof of Concept

References

https://vuldb.com/?id.351079
vdb-entrytechnical-description
https://vuldb.com/?ctiid.351079
signaturepermissions-required
https://vuldb.com/?submit.769770
third-party-advisory

CVSS V4

Score:
8.6
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

iC0rner (VulDB User)
VulDB
JSON
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