Stack-based Buffer Overflow in Trendnet Router
CVE-2026-15480

8.7HIGH

Key Information:

Vendor

Trendnet

Status
Tew-635brm
Vendor
CVE Published:
12 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-15480?

A stack-based buffer overflow vulnerability has been identified in the web service functionality of Trendnet TEW-635BRM routers running firmware version 1.00.03 and earlier. The flaw resides in the start_httpd function located in the /sbin/rc file, where improper handling of the device_name argument can lead to remote exploitation. The vendor has stated that this device has reached end-of-life status since 2011, and no official updates will be issued. As such, users are encouraged to upgrade to newer hardware to mitigate the risks associated with this vulnerability, especially since the exploit is publicly available.

Affected Version(s)

TEW-635BRM 1.00.03

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-2026-15480 - Proof of Concept

References

https://vuldb.com/vuln/377787
vdb-entrytechnical-description
https://vuldb.com/vuln/377787/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-15480
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

jfkk (VulDB User)
VulDB CNA Team
.