CVE-2026-8138: Tenda CX12L SetPptpServerCfg” formSetPPTPServer stack-based overflow

Published May 8, 2026
·
Updated

A vulnerability was found in Tenda CX12L 16.03.53.12. This issue affects the function formSetPPTPServer of the file /goform/SetPptpServerCfg”. The manipulation results in stack-based buffer overflow. The attack can be executed remotely. The exploit has been made public and could be used.

Affected Software

3 affected components
Tenda Tenda CX12L=16.03.53.12
All of the following
Tenda Cx12l Firmware=16.03.53.12
Tenda CX12L

Event History

May 8, 2026
CVE Published
via MITRE·04:15 AM
Data Sourced
via MITRE·04:15 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·05:16 AM
DescriptionSeverityWeaknessAffected Software
Nov 17, 58336
Event
via FIRST·03:25 PM
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Frequently Asked Questions

1

What is the severity of CVE-2026-8138?

CVE-2026-8138 has a high severity rating due to the potential for remote code execution via stack-based buffer overflow.

2

How do I fix CVE-2026-8138?

To fix CVE-2026-8138, it is recommended to update the Tenda CX12L device to the latest firmware version provided by the manufacturer.

3

What are the potential impacts of CVE-2026-8138?

Exploitation of CVE-2026-8138 could allow an attacker to execute arbitrary code with the privileges of the affected device.

4

Is CVE-2026-8138 remotely exploitable?

Yes, CVE-2026-8138 is remotely exploitable, allowing attackers to compromise the device without physical access.

5

Which devices are affected by CVE-2026-8138?

CVE-2026-8138 specifically affects the Tenda CX12L router running firmware version 16.03.53.12.

Contact

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