CVE-2025-29384 Memory corruption in n/a

Critical 9.8 Published Updated

A stack overflow in the Tenda AC9 router allows remote attackers to execute arbitrary code via the wanMTU parameter.

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

What is CVE-2025-29384?

CVE-2025-29384 is a critical memory corruption vulnerability in Tenda Ac9 Firmware, published on 14 Mar 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In Tenda AC9 v1.0 V15.03.05.14_multi, the wanMTU parameter of /goform/AdvSetMacMtuWan has a stack overflow vulnerability, which can lead to remote arbitrary code execution.

Weakness: CWE-787

Which versions are affected by CVE-2025-29384?

It affects 1 product.

Products include Tenda Ac9 Firmware.

How do I fix CVE-2025-29384?

No fix has been published for CVE-2025-29384 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-2025-29384 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-29384 exists.

Public exploit code: 2 proofs of concept on GitHub.

All Tenda Ac9 Firmware vulnerabilities

Sources

Also known as GHSA-c3m4-xrx9-mwc5.

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