Buffer Overflow Vulnerability in Tenda CX12L Wi-Fi Schedule Configuration
CVE-2026-11504

8.7HIGH

Key Information:

Vendor

Tenda
Status
Cx12l
Vendor
CVE Published:
8 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-11504?

A stack-based buffer overflow vulnerability has been found in the Tenda CX12L, specifically within the Wi-Fi Schedule Configuration Endpoint's setSchedWifi function. This flaw allows an attacker to manipulate the schedStartTime and schedEndTime arguments, potentially enabling remote exploitation. The details of this vulnerability are now publicly available, raising concerns for users to ensure their devices are secured against potential unauthorized access.

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-2026-11504 - Proof of Concept

References

https://vuldb.com/vuln/369124
vdb-entrytechnical-description
https://vuldb.com/vuln/369124/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-11504
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

moist (VulDB User)
.