CVE-2025-62843 QuRouter

Low 0.9 Published 20 Mar 2026 Updated 25 Mar 2026

Attackers with physical access can bypass communication channel restrictions to gain unauthorized privileges on QNAP QuRouter devices.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-62843?

CVE-2025-62843 is a low-severity vulnerability in QNAP Systems Inc. QuRouter, published on 20 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An improper restriction of communication channel to intended endpoints vulnerability has been reported to affect QHora. If an attacker gains physical access, they can then exploit the vulnerability to gain the privileges that were intended for the original endpoint.

We have already fixed the vulnerability in the following version: QuRouter 2.6.3.009 and later

Weakness: CWE-923

Which versions are affected by CVE-2025-62843?

It affects 1 product.

Products include Qnap Qurouter.

How do I fix CVE-2025-62843?

No fix has been published for CVE-2025-62843 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-62843 being exploited?

There is no known exploitation of CVE-2025-62843 in the wild and no public exploit code.

Sources

Also known as GHSA-v9ww-wgw5-f4f7.