Stack-based Buffer Overflow in Belkin F9K1122 Router
CVE-2025-7091

8.7HIGH

Key Information:

Vendor

Belkin

Status
F9k1122
Vendor
CVE Published:
6 July 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-7091?

A buffer overflow vulnerability exists in the Belkin F9K1122 router, specifically within the formWlanMP function of the webs component. By manipulating multiple parameters, an attacker could trigger a stack-based buffer overflow that allows for remote code execution. This exploitable weakness presents significant security risks, and although the issue has been disclosed publicly, the vendor has not responded to communications regarding the threat. Network administrators should take immediate action to secure their devices and monitor for any unusual activity related to this vulnerability.

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-2025-7091 - Proof of Concept

References

https://vuldb.com/?id.315006
vdb-entrytechnical-description
https://vuldb.com/?ctiid.315006
signaturepermissions-required
https://vuldb.com/?submit.603700
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)
.