I3 Firmware
CVE-2026-3801
HIGH
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessAuthenticate to router management interface
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DeliverySend crafted HTTP request to /goform/setAutoPing
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ExploitInject oversized payload into ping1/ping2 parameter
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ExecutionOverflow stack buffer
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ImpactExecute arbitrary code with router privileges
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, buffer size validation
MITRE ATT&CK
2 techniques across 2 tactics: Execution, Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | Tenda i3 firmware 1.0.0.6(2204) with /goform/setAutoPing endpoint accessible. Attacker requires valid login credentials to router management interface (PR:L). Target must be reachable over network with HTTP access to administrative functions. |
| Impact | CVSS 8.8 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: Low. User interaction: None. Exploitable via remote/network. Public exploit/POC available. |
| Exploit ScenarioDerived | A remote attacker could exploit this flaw, stack-based buffer overflow. |
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Alert meAnalysisAIv1 – Mar 12, 2026
Stack-based buffer overflow in Tenda i3 1.0.0.6(2204) firmware allows authenticated remote attackers to achieve complete system compromise through manipulation of ping parameters in the setAutoPing function. Public exploit code exists for this vulnerability and no patch is currently available, creating significant risk for affected deployments.
Earlier versions of this analysis (1)
A vulnerability was found in Tenda i3 1.0.0.6(2204). Affected by this vulnerability is the function formSetAutoPing of the file /goform/setAutoPing. [CVSS 8.8 HIGH]
RemediationAI
Monitor vendor advisories for a patch. Enable ASLR, DEP/NX, and stack canaries where possible. Restrict network access to the affected service where possible.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Classified as CWE-119 (Buffer Overflow). Affects I3 Firmware. A vulnerability was found in Tenda i3 1.0.0.6(2204). Affected by this vulnerability is the function formSetAutoPing of the file /goform/setAutoPing. Performing a manipulation of the argument ping1/ping2 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.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
2DescriptionCVE.org
A vulnerability was found in Tenda i3 1.0.0.6(2204). Affected by this vulnerability is the function formSetAutoPing of the file /goform/setAutoPing. Performing a manipulation of the argument ping1/ping2 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.
Executive ViewAI
A high-severity vulnerability (CVSS 8.8) has been identified in Tenda i3 routers that could allow attackers to compromise affected devices without requiring authentication. With public exploits available and no vendor patch currently released, any organization using this router model faces immediate risk of network intrusion and data exposure.
Disable the Auto Ping feature via device configuration if accessible; implement network access controls (ACLs) to restrict access to the /goform/setAutoPing endpoint; deploy Web Application Firewall (WAF) rules to monitor and block suspicious requests to the vulnerable function; segment affected routers on isolated VLANs; consider replacing with patched firmware versions if available from Tenda, or transition to alternative vendor equipment.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
VulDB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.
A stack-based buffer overflow occurs when a program writes more data to a buffer located on the stack than it was allocated to hold.
Affected Products (CPE)CVE.org
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