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Tenda CX12L EUVD-2026-28529

| CVE-2026-8138 HIGH
Stack-based Buffer Overflow (CWE-121)
2026-05-08 VulDB GHSA-v5fc-fw74-r356
7.4
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

3
Analysis Generated
May 08, 2026 - 05:31 vuln.today
CVSS changed
May 08, 2026 - 05:22 NVD
8.8 (HIGH) 7.4 (HIGH)
CVE Published
May 08, 2026 - 04:15 nvd
HIGH 7.4

DescriptionNVD

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.

AnalysisAI

Stack-based buffer overflow in Tenda CX12L router firmware 16.03.53.12 allows authenticated remote attackers to achieve full system compromise via the PPTP server configuration interface. The vulnerability resides in the formSetPPTPServer function within /goform/SetPptpServerCfg and is exploitable over the network with low attack complexity. …

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RemediationAI

Within 24 hours: inventory all Tenda CX12L routers in your environment and document firmware versions currently deployed. Within 7 days: immediately isolate any CX12L devices running firmware 16.03.53.12 from untrusted networks and restrict administrative access to authorized personnel only; change all default and shared administrative credentials. …

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EUVD-2026-28529 vulnerability details – vuln.today

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