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.
Published: 2026-07-30
Score: 9.3 Critical
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Thu, 30 Jul 2026 07:15:00 +0000

Type Values Removed Values Added
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.
Title Missing authentication for MQTT Broker
First Time appeared Phoenix Contact
Phoenix Contact charx Sec 3000
Phoenix Contact charx Sec 3050
Phoenix Contact charx Sec 3100
Phoenix Contact charx Sec 3150
Weaknesses CWE-306
CPEs cpe:2.3:o:phoenix_contact:charx_sec_3000:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenix_contact:charx_sec_3050:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenix_contact:charx_sec_3100:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenix_contact:charx_sec_3150:*:*:*:*:*:*:*:*
Vendors & Products Phoenix Contact
Phoenix Contact charx Sec 3000
Phoenix Contact charx Sec 3050
Phoenix Contact charx Sec 3100
Phoenix Contact charx Sec 3150
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

Phoenix Contact Charx Sec 3000 Charx Sec 3050 Charx Sec 3100 Charx Sec 3150
cve-icon MITRE

Status: PUBLISHED

Assigner: CERTVDE

Published:

Updated: 2026-07-30T06:47:04.767Z

Reserved: 2026-05-05T10:48:08.225Z

Link: CVE-2026-44090

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-306

    Missing Authentication for Critical Function