CVE-2025-24002

MQTT DoS Vulnerability in German EV Charging Stations

MEDIUM
5.3
CVSS Score
Published: July 8, 2025 at 06:58 AM UTC
Updated: June 17, 2026 at 08:57 AM UTC
8 products affected across 1 vendorCharx Sec 3000 FirmwareCharx Sec 3050 FirmwareCharx Sec 3150 Firmware

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

An unauthenticated remote attacker can use MQTT messages to crash a service on charging stations complying with German Calibration Law, resulting in a temporary denial-of-service for these stations until they got restarted by the watchdog.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 1.6.5
phoenixcontact-charx-sec-3000 (same device)
v ≤ 1.6.5
phoenixcontact-charx-sec-3050 (same device)
v ≤ 1.6.5
phoenixcontact-charx-sec-3100 (same device)
v ≤ 1.6.5
phoenixcontact-charx-sec-3150 (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMCERTVDE
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusANALYZED
CWE
CWE-20

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