CVE-2025-5609 Tenda AC18 AdvSetLanip fromadvsetlanip buffer overflow

High 8.7 Published 4 Jun 2025 Updated 4 Jun 2025

Remote attackers can trigger a buffer overflow in the Tenda AC18 router via the AdvSetLanip interface, 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-2025-5609?

CVE-2025-5609 is a high-severity memory corruption vulnerability in Tenda Ac18 Firmware, published on 4 Jun 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability classified as critical was found in Tenda AC18 15.03.05.05. Affected by this vulnerability is the function fromadvsetlanip of the file /goform/AdvSetLanip. The manipulation of the argument lanMask leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

Weakness: CWE-120, CWE-119

Which versions are affected by CVE-2025-5609?

It affects 1 product.

Products include Tenda Ac18 Firmware.

How do I fix CVE-2025-5609?

No fix has been published for CVE-2025-5609 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-2025-5609 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-5609 exists.

All Tenda Ac18 Firmware vulnerabilities

Sources

Also known as GHSA-pfgm-6vwx-85w9.