CVE-2025-9298 Tenda M3 QuickIndex formQuickIndex stack-based overflow

High 8.7 Published 21 Aug 2025 Updated 21 Aug 2025

Remote attackers can trigger a stack-based buffer overflow in the Tenda M3 router via the PPPOEPassword argument, potentially leading to code execution.

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-2025-9298?

CVE-2025-9298 is a high-severity memory corruption vulnerability in Tenda M3, published on 21 Aug 2025. 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 M3 1.0.0.12. Affected is the function formQuickIndex of the file /goform/QuickIndex. Executing manipulation of the argument PPPOEPassword can lead to stack-based buffer overflow. The attack can be launched remotely. The exploit has been published and may be used.

Weakness: CWE-121, CWE-119

Which versions are affected by CVE-2025-9298?

It affects 1 product.

Products include Tenda M3 Firmware.

How do I fix CVE-2025-9298?

No fix has been published for CVE-2025-9298 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-2025-9298 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-9298 exists.

Sources

Also known as GHSA-36fg-r84v-4px6.