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I3 Firmware CVE-2026-3799

HIGH
Buffer Overflow (CWE-119)
2026-03-09 cna@vuldb.com
Buffer Overflow Stack Overflow I3 Firmware
8.8
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 21:56 vuln.today
PoC Detected
Mar 09, 2026 - 16:14 vuln.today
Public exploit code
CVE Published
Mar 09, 2026 - 04:16 nvd
HIGH 8.8

DescriptionNVD

A flaw has been found in Tenda i3 1.0.0.6(2204). This impacts the function formSetCfm of the file /goform/setcfm. This manipulation of the argument funcpara1 causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been published and may be used.

AnalysisAI

Stack overflow in Tenda i3 firmware version 1.0.0.6(2204) allows authenticated remote attackers to achieve full system compromise through a malformed funcpara1 parameter in the /goform/setcfm endpoint. Public exploit code exists for this vulnerability, and no patch is currently available. …

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RemediationAI

Within 24 hours: Identify and inventory all Tenda i3 1.0.0.6(2204) devices in your network and isolate them from critical systems. Within 7 days: Implement network-level compensating controls including WAF rules blocking access to /goform/setcfm, restrict administrative access to trusted IPs only, and disable remote management if not essential. …

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CVE-2026-3799 vulnerability details – vuln.today
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