Main Vulnerability Database Vulnerabilities #VU140628

Trust Boundary Violation in Phoenix Contact GmbH products - CVE-2026-44091

Published: July 31, 2026

Vulnerability identifier: #VU140628

CSH Severity: High

CVSS v4: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-44091

CWE-ID: CWE-501

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to trust boundary violation within the MQTT service. A remote attacker can post a malicious ID to the MQTT Broker and create new configuration entry in the system configuration.

Affected software

CHARX SEC-3000
CHARX SEC-3050
CHARX SEC-3100
CHARX SEC-3150

How to mitigate CVE-2026-44091

Install updates from vendor's website.

CHARX SEC-3000 - update to 1.9.1
CHARX SEC-3050 - update to 1.9.1
CHARX SEC-3100 - update to 1.9.1
CHARX SEC-3150 - update to 1.9.1

External References

Related Security Bulletins