CVE-2025-4147 Netgear EX6200 sub_47F7C buffer overflow

High 8.7 Published Updated

Remote attackers can trigger a buffer overflow in the Netgear EX6200 via the host 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-2025-4147?

CVE-2025-4147 is a high-severity memory corruption vulnerability in Netgear Ex6200 Firmware, published on 1 May 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability has been found in Netgear EX6200 1.0.3.94 and classified as critical. Affected by this vulnerability is the function sub_47F7C. The manipulation of the argument host leads to buffer overflow. The attack can be launched remotely. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-120, CWE-119

Which versions are affected by CVE-2025-4147?

It affects 1 product.

Products include Netgear Ex6200 Firmware.

How do I fix CVE-2025-4147?

No fix has been published for CVE-2025-4147 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-2025-4147 being exploited?

There is no known exploitation of CVE-2025-4147 in the wild and no public exploit code.

All Netgear Ex6200 Firmware vulnerabilities

Sources

Also known as GHSA-gv6p-p4mw-6rjj.

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