Stack-based Buffer Overflow in Tenda CX12L Device
CVE-2026-5683

5.1MEDIUM

Key Information:

Vendor

Tenda
Status
Cx12l
Vendor
CVE Published:
6 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-5683?

A stack-based buffer overflow vulnerability exists in the Tenda CX12L device, specifically in the fromP2pListFilter function located in the /goform/P2pListFilter file. This vulnerability is triggered by manipulating the 'page' argument and can allow an attacker to execute arbitrary code. The exploit requires the attacker to be on the local network, making it a significant risk for users who may have untrusted devices connected. This flaw has been publicly disclosed, highlighting the need for users to take immediate action to secure their devices.

Affected Version(s)

CX12L 16.03.53.12

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-2026-5683 - Proof of Concept

References

https://vuldb.com/vuln/355510
vdb-entrytechnical-description
https://vuldb.com/vuln/355510/cti
signaturepermissions-required
https://vuldb.com/submit/792777
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Adjacent 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

lv1020 (VulDB User)
.