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CVE-2026-3804 - Vulnerability Analysis

HighCVSS: 8.8

Last Updated: March 9, 2026

Tenda i3 - Remote Code Execution

Published: March 9, 2026Updated: March 9, 2026PoC AvailableRemote Exploitable

Overview

Tenda i3 1.0.0.6(2204) contains a stack-based buffer overflow caused by manipulation of the "index" argument in /goform/WifiMacFilterSet, letting remote attackers execute arbitrary code, exploit requires crafted request.

Severity & Score

Severity: High

CVSS Score: 8.8

EPSS Score: 7.6%(Probability of exploitation in next 30 days)

Impact

Remote attackers can execute arbitrary code, potentially leading to full system compromise.

Mitigation

Update to the latest version.

References

Social Media Activity(2 posts)

TheHackerWire

@thehackerwire

Mar 9, 2026

🟠 CVE-2026-3804 - High (8.8) A security flaw has been discovered in Tenda i3 1.0.0.6(2204). This vulnerability affects the function formWifiMacFilterSet of the file /goform/WifiMacFilterSet. The manipulation of the argument index results in stack-based buffer overflow. It is ... 🔗 https://www.thehackerwire.com/vulnerability/CVE-2026-3804/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack

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Offensive Sequence

@offseq

Mar 9, 2026

⚠️ HIGH severity: CVE-2026-3804 in Tenda i3 v1.0.0.6(2204) enables remote stack-based buffer overflow via /goform/WifiMacFilterSet. Exploit is public — prioritize mitigation or isolation. https://radar.offseq.com/threat/cve-2026-3804-stack-based-buffer-overflow-in-tenda-c824133f #OffSeq #Vulnerability #Tenda #InfoSec

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Related Resources

Details

CVE ID: CVE-2026-3804
Severity: High
CVSS Score: 8.8
Type: buffer_overflow
Status: confirmed
EPSS: 7.6%
Social Posts: 2

CWE

CWE-119

CVSS Metrics

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Score

7.6%Probability of exploitation in the next 30 days