What’s Vulnerable › Vulnerabilities
CVE-2026-4156: ChargePoint Home Flex OCPP getpreq Stack-based Buffer Overflow Remote Code Execution Vulnerability
- Severity: high (CVSS 7.5 v3.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-04-11 · updated 2026-10-26
- Weakness: CWE-121
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.
Affected products
- ChargePoint Home Flex: before 5.5.4.22 — fixed in 5.5.4.22
How to fix
Upgrade to a fixed version: ChargePoint Home Flex 5.5.4.22. Check the vendor advisory for mitigations.
References
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