CVE-2025-28220 Memory corruption in n/a

High 7.5 Published 28 Mar 2025 Updated 21 Apr 2025

Remote attackers can crash the web server of Tenda W6_S routers via a buffer overflow in the setcfm function.

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-2025-28220?

CVE-2025-28220 is a high-severity memory corruption vulnerability in n/a, published on 28 Mar 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Tenda W6_S v1.0.0.4_510 has a Buffer Overflow vulnerability in the setcfm function, which allows remote attackers to cause web server crash via parameter funcpara1 passed to the binary through a POST request.

Weakness: CWE-120

Which versions are affected by CVE-2025-28220?

It affects 1 product.

Products include Tenda W6-S Firmware.

How do I fix CVE-2025-28220?

No fix has been published for CVE-2025-28220 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-2025-28220 being exploited?

There is no known exploitation of CVE-2025-28220 in the wild and no public exploit code.

Sources

Also known as GHSA-fqg9-8xmx-9fgp.