CVE-2026-49198 Predator Connect W6x: MQTT Broker Access Control

High 8.3 Published 29 May 2026 Updated 29 May 2026

Improper access control in the Predator Connect W6x MQTT broker allows unauthorized actors to subscribe to wildcard topics and read all MQTT traffic.

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-2026-49198?

CVE-2026-49198 is a high-severity missing authorization vulnerability in Acer Predator Connect W6x, published on 29 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Improper access control in the MQTT broker allows wildcard topic subscriptions, exposing all MQTT traffic to unauthorized actors.

Weakness: CWE-284

Which versions are affected by CVE-2026-49198?

It affects 1 product.

Products include Acer Predator Connect W6x Firmware.

How do I fix CVE-2026-49198?

No fix has been published for CVE-2026-49198 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-49198 being exploited?

There is no known exploitation of CVE-2026-49198 in the wild and no public exploit code.

Sources

Also known as GHSA-jwxj-jjcm-8p4w.