CVE-2025-24003: charx sec-3000 Buffer Overflow (CVSS 8.2)

Description

An unauthenticated remote attacker can use MQTT messages to trigger out-of-bounds writes in charging stations complying with German Calibration Law, resulting in a loss of integrity for only EichrechtAgents and potential denial-of-service for these stations.

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CVSS v3.1 Score

8.2

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Weakness Type (CWE)

CWE-120 CWE-120

Affected Products

Vendor	Product	Versions
phoenixcontact	charx_sec-3000_firmware	< 1.6.5
phoenixcontact	charx_sec-3000	All
phoenixcontact	charx_sec-3050_firmware	< 1.6.5
phoenixcontact	charx_sec-3050	All
phoenixcontact	charx_sec-3100_firmware	< 1.6.5
phoenixcontact	charx_sec-3100	All
phoenixcontact	charx_sec-3150_firmware	< 1.6.5
phoenixcontact	charx_sec-3150	All

References

Other References

https://certvde.com/en/advisories/VDE-2025-014

Frequently Asked Questions

What is CVE-2025-24003? +

An unauthenticated remote attacker can use MQTT messages to trigger out-of-bounds writes in charging stations complying with German Calibration Law, resulting in a loss of integrity for only EichrechtAgents and potential denial-of-service for these stations. It has a CVSS v3.1 base score of 8.2 (HIGH).

How severe is CVE-2025-24003? +

CVE-2025-24003 has a CVSS v3.1 score of 8.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-24003? +

CVE-2025-24003 affects products from phoenixcontact, specifically: charx_sec-3000, charx_sec-3000_firmware, charx_sec-3050, charx_sec-3050_firmware, charx_sec-3100, charx_sec-3100_firmware, charx_sec-3150, charx_sec-3150_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-24003? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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