CVE-2026-2910 Tenda HG9 formPing6 stack-based overflow

High 8.7 Published Updated

Remote attackers can trigger a stack-based buffer overflow in the Tenda HG9 router via the formPing6 endpoint, potentially leading to code execution or service disruption.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-2910?

CVE-2026-2910 is a high-severity memory corruption vulnerability in Tenda HG9, published on 22 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

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.

Weakness: CWE-121, CWE-119

Which versions are affected by CVE-2026-2910?

It affects 1 product.

Products include Tenda Hg9 Firmware.

How do I fix CVE-2026-2910?

No fix has been published for CVE-2026-2910 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-2910 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2910 exists.

Sources

Also known as GHSA-fxq4-96xx-h92h.

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