Stack-Based Buffer Overflow in Trendnet TEW-657BRM Router
CVE-2026-5349

8.7HIGH

Key Information:

Vendor

Trendnet

Status
Tew-657brm
Vendor
CVE Published:
2 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-5349?

A vulnerability has been detected in the Trendnet TEW-657BRM 1.00.1 router, specifically in the add_apcdb function of the setup.cgi file. Attackers can exploit this vulnerability through a remote method by manipulating the mac_pc_dba argument, potentially leading to a stack-based buffer overflow. This flaw can be leveraged by malicious actors since the exploit code is publicly available. It is critical to note that the affected product has been discontinued and is no longer supported, as Trendnet ceased maintenance and support for it on June 23, 2011. Users of this outdated router should be aware of the potential security risks involved.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

Affected Version(s)

TEW-657BRM 1.00.1

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-2026-5349 - Proof of Concept

References

https://vuldb.com/vuln/354702
vdb-entrytechnical-description
https://vuldb.com/vuln/354702/cti
signaturepermissions-required
https://vuldb.com/submit/781563
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

panda_0x1 (VulDB User)
VulDB CNA Team
JSON
.