Which versions of Tenda are affected by CVE-2026-4489?

A critical remote code execution vulnerability affects Tenda A18 Pro routers (firmware 02.03.02.28) that allows authenticated attackers to gain complete control of affected devices.

Is there a public PoC exploit available for CVE-2026-4489?

Yes, a public proof-of-concept exploit is available for CVE-2026-4489. Prioritise patching immediately. EPSS: 0.0%.

Tenda CVE-2026-4489

Q: What is the CVSS score of CVE-2026-4489?

CVE-2026-4489 has a CVSS 4.0 base score of 7.4 (High). CVSS vector: 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. EPSS exploitation probability: 0.0%.

EUVD-2026-13729 HIGH

Stack-based Buffer Overflow (CWE-121)

2026-03-20 VulDB

Buffer Overflow Stack Overflow Tenda

7.4

CVSS 4.0

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

Lifecycle Timeline

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 - 16:15 euvd

EUVD-2026-13729

Analysis Generated

Mar 20, 2026 - 16:15 vuln.today

CVE Published

Mar 20, 2026 - 16:02 nvd

HIGH 8.8

DescriptionNVD

A vulnerability was detected in Tenda A18 Pro 02.03.02.28. This vulnerability affects the function form_fast_setting_wifi_set of the file /goform/fast_setting_wifi_set. The manipulation results in stack-based buffer overflow. The attack may be launched remotely. The exploit is now public and may be used.

AnalysisAI

Stack-based buffer overflow in Tenda A18 Pro firmware version 02.03.02.28 allows authenticated remote attackers to achieve complete system compromise through the /goform/fast_setting_wifi_set endpoint. Public exploit code is available and actively being weaponized against this unpatched vulnerability. …

RemediationAI

Within 24 hours: Inventory all Tenda A18 Pro routers in your environment and isolate affected devices from critical network segments. Within 7 days: Implement network access controls restricting administrative access to these devices and enable detailed logging for all authentication attempts. …

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

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CVE-2026-4489 vulnerability details – vuln.today

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Tenda CVE-2026-4489

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Tenda CVE-2026-4489

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External POC / Exploit Code