Buffer Overflow Vulnerability in Tenda FH451 Router
CVE-2025-7747

8.7HIGH

Key Information:

Vendor

Tenda
Status
Fh451
Vendor
CVE Published:
17 July 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-7747?

A buffer overflow vulnerability exists in the Tenda FH451 router version 1.0.0.9, specifically within the fromWizardHandle function of the POST Request Handler. A remote attacker can exploit this vulnerability by manipulating the PPW argument, potentially leading to unauthorized access or services disruptions. This vulnerability has been publicly disclosed, making the affected product susceptible to exploitation in the wild.

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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-2025-7747 - Proof of Concept

References

https://vuldb.com/?id.316737
vdb-entrytechnical-description
https://vuldb.com/?ctiid.316737
signaturepermissions-required
https://vuldb.com/?submit.615487
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

zezhifu (VulDB User)
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