Stack-Based Buffer Overflow Vulnerability in Belkin Router
CVE-2025-7085

8.7HIGH

Key Information:

Vendor

Belkin

Status
F9k1122
Vendor
CVE Published:
6 July 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-7085?

A stack-based buffer overflow vulnerability exists in the Belkin F9K1122 router, specifically within the formiNICWpsStart function of the /goform/formiNICWpsStart file. This vulnerability arises when user-supplied input, specifically the pinCode argument, is not properly validated, allowing an attacker to craft requests that could overflow the stack. Exploitation of this flaw can be performed remotely, potentially leading to unauthorized access or execution of malicious code. Despite early disclosures to the vendor, no response has been made, raising concerns for user safety and device integrity.

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-2025-7085 - Proof of Concept

References

https://vuldb.com/?id.314999
vdb-entrytechnical-description
https://vuldb.com/?ctiid.314999
signaturepermissions-required
https://vuldb.com/?submit.603694
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)
.
CVE-2025-7085 : Stack-Based Buffer Overflow Vulnerability in Belkin Router