What is CVE-2026-44091?

CVE-2026-44091 is a critical-severity vulnerability in Phoenix Contact Charx Sec-3000, classified under Trust Boundary Violation. CVSS score: 9.1/10. Published 2026-07-30.

How severe is CVE-2026-44091?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in Phoenix Contact Charx Sec-3000

CVE-2026-44091

An unauthenticated remote attacker can post a malicious ID to the MQTT Broker results in the creation of a new configuration entry in the system configuration. This may lead to integrity and availability loss.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

Affected products

Phoenix Contact Charx Sec-3000 — versions 1.0.0
Phoenix Contact Charx Sec-3050 — versions 1.0.0
Phoenix Contact Charx Sec-3100 — versions 1.0.0
Phoenix Contact Charx Sec-3150 — versions 1.0.0

Weakness classification (CWE)

CWE-501 — Trust Boundary Violation

References

info@cert.vde.com

Frequently asked questions

What is CVE-2026-44091?: CVE-2026-44091 is a critical-severity vulnerability in Phoenix Contact Charx Sec-3000, classified under Trust Boundary Violation. CVSS score: 9.1/10. Published 2026-07-30.
How severe is CVE-2026-44091?: Critical severity. CVSS v3 base score is 9.1 out of 10.