Hg9 Firmware CVE-2026-2909
HIGHCVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
3DescriptionNVD
A vulnerability was detected in Tenda HG9 300001138. This affects an unknown part of the file /boaform/formPing of the component Diagnostic Ping Endpoint. Performing a manipulation of the argument pingAddr results in stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit is now public and may be used.
AnalysisAI
Stack-based buffer overflow in the Diagnostic Ping Endpoint of Tenda HG9 firmware allows unauthenticated remote attackers to achieve code execution by supplying a malicious pingAddr parameter. The vulnerability exists in the /boaform/formPing component and is exploitable over the network with low complexity. …
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RemediationAI
Within 24 hours: Identify and inventory all Tenda HG9 devices (model 300001138) in production environments and isolate them from critical network segments if possible. Within 7 days: Implement compensating controls including network access restrictions and WAF rules to block malicious ping diagnostic requests; consider disabling the ping diagnostic feature if operationally feasible. …
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External POC / Exploit Code
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