CVE-2026-4156

ChargePoint Home Flex OCPP getpreq Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of ChargePoint Home Flex EV chargers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of OCPP messages. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-26339.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector : AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability : 1.6 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.zerodayinitiative.com/advisories/ZDI-26-196/	Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:chargepoint:home_flex_cph50_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:chargepoint:home_flex_cph50:-:*:*:*:*:*:*:*

History

26 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) Vulnerabilidad de ejecución remota de código por desbordamiento de búfer basado en pila en ChargePoint Home Flex OCPP getpreq. Esta vulnerabilidad permite a atacantes adyacentes a la red ejecutar código arbitrario en instalaciones afectadas de cargadores de vehículos eléctricos ChargePoint Home Flex. La autenticación no es necesaria para explotar esta vulnerabilidad. El fallo específico existe en el manejo de mensajes OCPP. El problema se debe a la falta de validación adecuada de la longitud de los datos proporcionados por el usuario antes de copiarlos a un búfer basado en pila de longitud fija. Un atacante puede aprovechar esta vulnerabilidad para ejecutar código en el contexto de root. Fue ZDI-CAN-26339.

Information

Published : 2026-04-11 01:16

Updated : 2026-10-26 21:10

NVD link : CVE-2026-4156

Mitre link : CVE-2026-4156

CVE.ORG link : CVE-2026-4156

JSON object : View

Products Affected

chargepoint

home_flex_cph50_firmware
home_flex_cph50

CWE

CWE-121

Stack-based Buffer Overflow

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