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Tenda CVE-2026-4492

| EUVD-2026-13740 HIGH
Stack-based Buffer Overflow (CWE-121)
2026-03-20 VulDB
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

6
Re-analysis Queued
Apr 22, 2026 - 21:37 vuln.today
cvss_changed
CVSS changed
Apr 22, 2026 - 21:37 NVD
8.8 (HIGH) 7.4 (HIGH)
PoC Detected
Mar 24, 2026 - 15:54 vuln.today
Public exploit code
EUVD ID Assigned
Mar 20, 2026 - 17:30 euvd
EUVD-2026-13740
Analysis Generated
Mar 20, 2026 - 17:30 vuln.today
CVE Published
Mar 20, 2026 - 17:02 nvd
HIGH 8.8

DescriptionNVD

A vulnerability was found in Tenda A18 Pro 02.03.02.28. The affected element is the function set_qosMib_list of the file /goform/formSetQosBand. Performing a manipulation of the argument list results in stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been made public and could be used.

AnalysisAI

Remote code execution in Tenda A18 Pro firmware 02.03.02.28 allows authenticated attackers to achieve full system compromise through stack-based buffer overflow in the QoS configuration function. Public exploit code exists for this vulnerability and no patch is currently available, leaving deployed devices at immediate risk.

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RemediationAI

Within 24 hours: Inventory all Tenda A18 Pro routers running firmware 02.03.02.28 and isolate affected devices from critical network segments; disable the /goform/formSetQosBand endpoint if possible via administrative access controls. Within 7 days: Restrict administrative access to affected routers to authorized personnel only, implement network segmentation to limit lateral movement, and monitor for suspicious authentication logs. …

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CVE-2026-4492 vulnerability details – vuln.today

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