CVE-2026-0711 Command injection in DX3300-T0 firmware

Medium 6.8 Published 28 Apr 2026 Updated 29 Apr 2026

Authenticated administrators can execute arbitrary OS commands on Zyxel DX3300-T0 devices via EasyMesh APIs.

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

What is CVE-2026-0711?

CVE-2026-0711 is a medium-severity command injection vulnerability in Zyxel DX3300-T0 firmware, published on 28 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A post-authentication command injection vulnerability in the EasyMesh-related APIs of Zyxel DX3300-T0 firmware versions through 5.50(ABVY.7.1)C0 could allow an authenticated, adjacent attacker with administrator privileges to execute OS commands on an affected device.

Weakness: CWE-78

Which versions are affected by CVE-2026-0711?

It affects 36 products.

Products include Zyxel Ax7501-B0 Firmware, Zyxel Ax7501-B1 Firmware, Zyxel Dx3300-T0 Firmware, Zyxel Dx3300-T1 Firmware, Zyxel Dx3301-T0 Firmware, Zyxel Dx5401-B0 Firmware and 30 more.

How do I fix CVE-2026-0711?

No fix has been published for CVE-2026-0711 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2026-0711 being exploited?

There is no known exploitation of CVE-2026-0711 in the wild and no public exploit code.

Sources

Also known as GHSA-8358-7fqv-7hg5.