Buffer Overflow Vulnerability in Belkin F9K1015 Router
CVE-2025-11294

8.7HIGH

Key Information:

Vendor

Belkin

Status
F9k1015
Vendor
CVE Published:
5 October 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-11294?

A buffer overflow vulnerability has been identified in the Belkin F9K1015 router, specifically within the /goform/formL2TPSetup feature. An attacker can exploit this vulnerability remotely by manipulating the L2TPUserName argument, leading to potential unauthorized access and system instability. Despite early disclosure attempts to the vendor, no response has been received. This issue poses a significant security risk and emphasizes the need for prompt mitigation measures.

Affected Version(s)

F9K1015 1.00.10

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-2025-11294 - Proof of Concept

References

https://vuldb.com/?id.327175
vdb-entrytechnical-description
https://vuldb.com/?ctiid.327175
signaturepermissions-required
https://vuldb.com/?submit.661298
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_0xf1 (VulDB User)
JSON
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CVE-2025-11294 : Buffer Overflow Vulnerability in Belkin F9K1015 Router