Stack-based Buffer Overflow in Belkin F9K1122 Router
CVE-2025-7090

8.7HIGH

Key Information:

Vendor

Belkin

Status
F9k1122
Vendor
CVE Published:
6 July 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-7090?

A vulnerability has been identified in the Belkin F9K1122 router, specifically in the formConnectionSetting function within the /goform/formConnectionSetting file. By manipulating the arguments max_Conn or timeOut, attackers can exploit a stack-based buffer overflow. This vulnerability can be remotely exploited, posing significant risk to users. The issue was disclosed publicly, raising concerns about potential attacks targeting this flaw. Despite an early notification, the vendor did not respond to requests for remediation details.

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Affected Version(s)

F9K1122 1.00.33

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-2025-7090 - Proof of Concept

References

https://vuldb.com/?id.315002
vdb-entrytechnical-description
https://vuldb.com/?ctiid.315002
signaturepermissions-required
https://vuldb.com/?submit.603699
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

pjqwudi (VulDB User)
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