CVE-2025-48826 Memory corruption in WGR-500

High 8.8 Published 7 Oct 2025 Updated 3 Nov 2025

A format string vulnerability in the Planet WGR-500 router allows attackers to cause memory corruption via crafted HTTP requests.

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-2025-48826?

CVE-2025-48826 is a high-severity memory corruption vulnerability in Planet WGR-500, published on 7 Oct 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A format string vulnerability exists in the formPingCmd functionality of Planet WGR-500 v1.3411b190912. A specially crafted series of HTTP requests can lead to memory corruption. An attacker can send a series of HTTP requests to trigger this vulnerability.

Weakness: CWE-134

Which versions are affected by CVE-2025-48826?

It affects 1 product.

Products include Planet Wgr-500 Firmware.

How do I fix CVE-2025-48826?

No fix has been published for CVE-2025-48826 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-2025-48826 being exploited?

There is no known exploitation of CVE-2025-48826 in the wild and no public exploit code.

Sources

Also known as GHSA-9vmf-4m6v-4cmv.