# CVE-2026-44107: Phoenix Contact CHARX SEC charging controller unauthenticated reboot via Modbus TCP

Source: https://junglewise.ai/threats/cve-2026-44107-phoenix-contact-charx-sec-charging-controller-unauthenticated  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-30. Updated: 2026-07-30  
License: CC BY 4.0 with a link back

CVE-2026-44107 · Severity: high · CVSS 7.5 · Published 2026-07-30

Phoenix Contact CHARX charging controllers, which manage electric vehicle charging stations, contain a flaw that allows them to be remotely rebooted. An unauthorized person on the network can trigger this reboot without needing a password, causing the charging station to stop working. This results in a denial-of-service that prevents vehicles from charging until the system recovers.

Technologies: [Phoenix Contact CHARX SEC-3000](https://junglewise.ai/threats/technologies/charx-sec-3000), [Phoenix Contact CHARX SEC-3050](https://junglewise.ai/threats/technologies/charx-sec-3050), [Phoenix Contact CHARX SEC-3100](https://junglewise.ai/threats/technologies/charx-sec-3100), [Phoenix Contact CHARX SEC-3150](https://junglewise.ai/threats/technologies/charx-sec-3150). Vendors: [Phoenix Contact](https://junglewise.ai/threats/vendors/phoenix-contact).

## Quick answers

**Is CVE-2026-44107 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-44107 being exploited in the wild.

**How severe is CVE-2026-44107?** High severity, with a CVSS score of 7.5, published 30 July 2026.

**Which products and versions are affected?** Phoenix Contact CHARX SEC-3000 1.0.0 to 1.9.1 (exclusive); Phoenix Contact CHARX SEC-3050 1.0.0 to 1.9.1 (exclusive); Phoenix Contact CHARX SEC-3100 1.0.0 to 1.9.1 (exclusive); Phoenix Contact CHARX SEC-3150 1.0.0 to 1.9.1 (exclusive).

**Is there a fix for CVE-2026-44107?** A patch was published on 2026-07-30: Fixed in firmware version 1.9.1 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-44107 attacked?** It is attacked over the network, in an operating system.

**Am I affected by CVE-2026-44107?** 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

The CharxModbusServer component in Phoenix Contact CHARX SEC-3xxx charging controllers exposes a dangerous method or function via Modbus TCP. An unauthenticated remote attacker can send a specific Modbus command to the listening port to trigger a system reboot. This vulnerability (CWE-749) is accessible whenever Modbus functionality is enabled and the port is reachable over the network. Successful exploitation results in a Denial-of-Service (DoS) condition. The issue is addressed in firmware version 1.9.1.

## Affected products

- Phoenix Contact CHARX SEC-3000 1.0.0 to 1.9.1 (exclusive)
- Phoenix Contact CHARX SEC-3050 1.0.0 to 1.9.1 (exclusive)
- Phoenix Contact CHARX SEC-3100 1.0.0 to 1.9.1 (exclusive)
- Phoenix Contact CHARX SEC-3150 1.0.0 to 1.9.1 (exclusive)

## Timeline

- 2026-07-30: disclosed
- 2026-07-30: advisory
- 2026-07-30: patched: Fixed in firmware version 1.9.1

## References

- [https://www.certvde.com/en/advisories/VDE-2026-008/](https://www.certvde.com/en/advisories/VDE-2026-008/)

## Related threats

- [Phoenix Contact CHARX SEC command injection in system configuration](https://junglewise.ai/threats/cve-2026-7849-phoenix-contact-charx-sec-command-injection-in-system)
- [Phoenix Contact CHARX SEC-3xxx firewall bypass during shutdown](https://junglewise.ai/threats/cve-2026-44108-phoenix-contact-charx-sec-3xxx-firewall-bypass-during-shutdown)
- [Phoenix Contact CHARX SEC-3xxx privilege escalation in init-script](https://junglewise.ai/threats/cve-2026-44106-phoenix-contact-charx-sec-3xxx-privilege-escalation-in-init)
- [Phoenix Contact CHARX SEC-3xxx credential exposure in log files](https://junglewise.ai/threats/cve-2026-44105-phoenix-contact-charx-sec-3xxx-credential-exposure-in-log-files)
- [Phoenix Contact CHARX SEC firmware update signature bypass](https://junglewise.ai/threats/cve-2026-44104-phoenix-contact-charx-sec-firmware-update-signature-bypass)