Stack-based Buffer Overflow in Tenda W12 Router
CVE-2025-11549

8.7HIGH

Key Information:

Vendor

Tenda
Status
W12
Vendor
CVE Published:
9 October 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-11549?

A stack-based buffer overflow vulnerability exists in the Tenda W12 router, specifically in the wifiMacFilterSet function within the HTTP Request Handler component. By manipulating the MAC address argument, an attacker can exploit this vulnerability remotely, potentially leading to unauthorized access and control over the affected device. The nature of the vulnerability allows it to be exploited from a distance, increasing the risk to users operating affected versions of the router. This vulnerability has been publicly disclosed, underscoring the importance of immediate remediation for users.

Affected Version(s)

W12 3.0.0.6(3948)

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-2025-11549 - Proof of Concept

References

https://vuldb.com/?id.327708
vdb-entrytechnical-description
https://vuldb.com/?ctiid.327708
signaturepermissions-required
https://vuldb.com/?submit.670110
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

z472421519 (VulDB User)
JSON
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CVE-2025-11549 : Stack-based Buffer Overflow in Tenda W12 Router