CVE-2025-51630 Memory corruption in n/a

Critical 9.8 Published 17 Jul 2025 Updated 17 Jul 2025

A buffer overflow in the TOTOLINK N350RT router allows attackers to execute arbitrary code or cause a denial of service via the ePort 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-2025-51630?

CVE-2025-51630 is a critical memory corruption vulnerability in n/a, published on 17 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

TOTOLINK N350RT V9.3.5u.6139_B20201216 was discovered to contain a buffer overflow via the ePort parameter in the function setIpPortFilterRules.

Weakness: CWE-120

Which versions are affected by CVE-2025-51630?

It affects 1 product.

Products include Totolink N350rt Firmware.

How do I fix CVE-2025-51630?

No fix has been published for CVE-2025-51630 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-2025-51630 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-51630 exists.

Sources

Also known as GHSA-hjq6-jrvq-m64c.