What is CVE-2026-4156?

CVE-2026-4156 is a high-severity vulnerability in Chargepoint Home Flex, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-04-11.

How severe is CVE-2026-4156?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Chargepoint Home Flex

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 charge…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (31.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Chargepoint Home Flex — versions 5.5.4.13

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

ZDI-26-196 (x_research-advisory)

Frequently asked questions

What is CVE-2026-4156?: CVE-2026-4156 is a high-severity vulnerability in Chargepoint Home Flex, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-04-11.
How severe is CVE-2026-4156?: High severity. CVSS v3 base score is 7.5 out of 10.