CVE-2026-2909
High
Description
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.
SeverityHigh
CVSS8.8
Exploit probability—
ProductTenda Hg9 Firmware
PublishedFeb 22, 2026
First seenFeb 22, 2026
Weakness typeCWE-121CWE-121CWE-119Memory buffer bounds error
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| tenda hg9_firmware | 300001138 | — |
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