CVE-2026-44108: Phoenix Contact CHARX SEC-3xxx firewall bypass during shutdown

CVE-2026-44108 · Severity: critical · CVSS 9.8 · Published 2026-07-30

Phoenix Contact CHARX charging controllers, used to manage electric vehicle charging stations, contain a flaw in how they shut down. During the power-off process, the firewall stops protecting the device before other internal services are closed, creating a brief window of vulnerability. An attacker could exploit this timing to bypass security controls and gain full control over the charging controller, potentially leading to data theft or service disruption.

Technologies: Phoenix Contact CHARX SEC-3000, Phoenix Contact CHARX SEC-3050, Phoenix Contact CHARX SEC-3100, Phoenix Contact CHARX SEC-3150. Vendors: Phoenix Contact.

Quick answers

Is CVE-2026-44108 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-44108 being exploited in the wild.
How severe is CVE-2026-44108?
Critical severity, with a CVSS score of 9.8, published 30 July 2026.
Which products and versions are affected?
Phoenix Contact CHARX SEC-3000 < 1.9.1; Phoenix Contact CHARX SEC-3050 < 1.9.1; Phoenix Contact CHARX SEC-3100 < 1.9.1; Phoenix Contact CHARX SEC-3150 < 1.9.1.
Is there a fix for CVE-2026-44108?
A patch was published on 2026-07-30: Firmware version 1.9.1 released to address the issue Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-44108 attacked?
It is attacked over the network, in an operating system.
Am I affected by CVE-2026-44108?
Check whether you run Phoenix Contact CHARX SEC-3000, Phoenix Contact CHARX SEC-3050, Phoenix Contact CHARX SEC-3100 or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

This vulnerability is classified as Incorrect Behavior Order (CWE-696) within the shutdown sequence of the CHARX SEC-3xxx firmware. During system shutdown, the firewall service is terminated before internal services (such as MQTT or OCPP agents) are stopped. This creates a race condition where a remote, unauthenticated attacker can connect to these normally protected services during the shutdown window. Successful exploitation can lead to full system compromise, including unauthorized reconfiguration or command execution. The issue is resolved in firmware version 1.9.1.

Affected products

  • Phoenix Contact CHARX SEC-3000 < 1.9.1
  • Phoenix Contact CHARX SEC-3050 < 1.9.1
  • Phoenix Contact: CHARX SEC-3100 < 1.9.1
  • Phoenix Contact CHARX SEC-3150 < 1.9.1

Timeline

  • 2026-07-30: advisory: Advisory published by CERT VDE and Phoenix Contact
  • 2026-07-30: patched: Firmware version 1.9.1 released to address the issue

References

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