CVE-2026-44090
Critical
Description
Due to missing authentication, an unauthenticated remote attacker may access the MQTT broker, which is only protected from external access by a firewall. This may lead to the device being fully compromised.
SeverityCritical
CVSS9.8
Exploit probability—
ProductCHARX SEC-3150
PublishedJul 30, 2026
First seenJul 30, 2026
Weakness typeCWE-306Missing authentication for critical function
How to fix
Update
- Phoenix Contact CHARX SEC-31501.9.1 or later
- Phoenix Contact CHARX SEC-31001.9.1 or later
- Phoenix Contact CHARX SEC-30501.9.1 or later
- Phoenix Contact CHARX SEC-30001.9.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Phoenix Contact CHARX SEC-3150 | 1.0.0 ≤ v < 1.9.1 | 1.9.1 |
| Phoenix Contact CHARX SEC-3100 | 1.0.0 ≤ v < 1.9.1 | 1.9.1 |
| Phoenix Contact CHARX SEC-3050 | 1.0.0 ≤ v < 1.9.1 | 1.9.1 |
| Phoenix Contact CHARX SEC-3000 | 1.0.0 ≤ v < 1.9.1 | 1.9.1 |
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