Stack-Based Buffer Overflow in Tenda FH451 Product
CVE-2025-7805

8.7HIGH

Key Information:

Vendor

Tenda
Status
Fh451
Vendor
CVE Published:
18 July 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-7805?

A stack-based buffer overflow vulnerability has been identified in the Tenda FH451, specifically in the fromPptpUserSetting function within the /goform/PPTPUserSetting file. By manipulating the parameter 'delno', an attacker can exploit this vulnerability remotely, potentially leading to unauthorized access or control over the affected system. Given the public disclosure of the attack vector, it is crucial for users to take immediate action to secure their devices.

Affected Version(s)

FH451 1.0.0.9

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-2025-7805 - Proof of Concept

References

https://vuldb.com/?id.316881
vdb-entrytechnical-description
https://vuldb.com/?ctiid.316881
signaturepermissions-required
https://vuldb.com/?submit.616347
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)
.