CVE-2026-44090: Phoenix Contact Charx Sec-3000

Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days.

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.

Affected products

• Phoenix Contact Charx Sec-3000: from 1.0.0, before 1.9.1 (fixed in 1.9.1)
• Phoenix Contact Charx Sec-3050: from 1.0.0, before 1.9.1 (fixed in 1.9.1)
• Phoenix Contact Charx Sec-3100: from 1.0.0, before 1.9.1 (fixed in 1.9.1)
• Phoenix Contact Charx Sec-3150: from 1.0.0, before 1.9.1 (fixed in 1.9.1)

Published 2026-07-30. Last modified 2026-07-30.