by Kastro
Paper/Archive/CVE-2026-44090

CVE-2026-44090

Phoenix Contact CHARX SEC-3150 — Missing authentication for MQTT Broker

EPSS 0.7%CVSS 9.8
critical.is priorityof 100
40
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 54.8.548 × 2011.0No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
CHARX SEC-31501.0.0 – < 1.9.11.9.1CNA
CHARX SEC-31001.0.0 – < 1.9.11.9.1CNA
CHARX SEC-30501.0.0 – < 1.9.11.9.1CNA
CHARX SEC-30001.0.0 – < 1.9.11.9.1CNA

Scores by source

CERTVDE (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CERTVDE (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refcertvde.com/en/advisories/VDE-2026-008