Hard-Coded Cryptographic Key Vulnerability in TRENDnet TN-200
CVE-2025-8759

6.3MEDIUM

Key Information:

Vendor

Trendnet

Status
Tn-200
Vendor
CVE Published:
9 August 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-8759?

A vulnerability has been identified in TRENDnet’s TN-200 device, specifically in the Lighttpd component. This issue arises from the manipulation of the secdownload.secret argument, leading to the use of a hard-coded cryptographic key. Attackers can exploit this vulnerability remotely, although the complexity of the attack is relatively high. This exploit has been publicly disclosed, with limited response from the vendor regarding the issue.

Affected Version(s)

TN-200 1.02b02

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-2025-8759 - Proof of Concept

References

https://vuldb.com/?id.319264
vdb-entrytechnical-description
https://vuldb.com/?ctiid.319264
signaturepermissions-required
https://vuldb.com/?submit.624555
third-party-advisory

CVSS V4

Score:
6.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

TPCHECKER (VulDB User)
.
CVE-2025-8759 : Hard-Coded Cryptographic Key Vulnerability in TRENDnet TN-200