Hg9 Firmware
CVE-2026-2910
HIGH
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessAuthenticate as valid user
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DeliverySend crafted POST to /boaform/formPing6
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ExploitInject oversized pingAddr 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A06:2021 - Vulnerable and Outdated Components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 HG9 (firmware 300001138) with /boaform/formPing6 endpoint accessible. Valid credentials required for authentication. Stack-based buffer overflow via pingAddr parameter manipulation during ping6 form processing. |
| 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 vulnerability to stack-based buffer overflow. |
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Alert meAnalysisAIv1 – Mar 12, 2026
Stack-based buffer overflow in Tenda HG9 firmware's pingAddr parameter allows unauthenticated remote attackers to achieve code execution through the /boaform/formPing6 endpoint. Public exploit code exists for this vulnerability, and no patch is currently available. The flaw carries high severity with complete compromise potential across confidentiality, integrity, and availability.
Earlier versions of this analysis (1)
A flaw has been found in Tenda HG9 300001138. This vulnerability affects unknown code of the file /boaform/formPing6. [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 Hg9 Firmware. A flaw has been found in Tenda HG9 300001138. This vulnerability affects unknown code of the file /boaform/formPing6. Executing a manipulation of the argument pingAddr can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been published and may 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 flaw has been found in Tenda HG9 300001138. This vulnerability affects unknown code of the file /boaform/formPing6. Executing a manipulation of the argument pingAddr can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been published and may be used.
Executive ViewAI
A high-severity vulnerability (CVSS 8.8) has been discovered in Tenda HG9 devices that could allow attackers to compromise affected network equipment. Organizations using this router model face immediate risk of unauthorized access and network infiltration, with public exploits already available. Immediate action is required to identify affected devices and implement protective measures until a vendor patch is released.
Disable remote access and web-based management interfaces on affected Tenda HG9 devices. Implement network segmentation and restrict administrative access via firewall rules to trusted networks only. Deploy intrusion detection/prevention signatures targeting /boaform/formPing6 exploitation attempts. Configure WAF rules to block suspicious IPv6 ping requests if accessible from untrusted networks. Disable IPv6 functionality if not required. Monitor device logs for unauthorized access attempts. Consider temporary replacement or bypass of affected devices until vendor patch is available.
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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Exploit-DB