Vulnerability Description
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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Chargepoint | Home Flex Cph50 Firmware | < 5.5.4.22 |
| Chargepoint | Home Flex Cph50 | - |
Related Weaknesses (CWE)
References
- https://www.zerodayinitiative.com/advisories/ZDI-26-196/Third Party Advisory
FAQ
What is CVE-2026-4156?
CVE-2026-4156 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 installat...
How severe is CVE-2026-4156?
CVE-2026-4156 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-4156?
Check the references section above for vendor advisories and patch information. Affected products include: Chargepoint Home Flex Cph50 Firmware, Chargepoint Home Flex Cph50.