EVerest: ISO15118 session_setup payment options overflow can corrupt EVSE state

EVerest is an EV charging software stack. Prior to versions to 2026.02.0, ISO15118_chargerImpl::handle_session_setup copies a variable-length payment_options list into a fixed-size array of length 2 without bounds checking. With schema validation disabled by default, oversized MQTT Cmd payloads can trigger out-of-bounds writes and corrupt adjacent EVSE state or crash the process. Version 2026.02.0 contains a patch.

Problem type

CWE-787: Out-of-bounds Write

Affected products

EVerest

everest-core

< 2026.02.0 - AFFECTED

References

https://github.com/EVerest/EVerest/security/advisories/GHSA-7wmg-crc8-6xxf

https://github.com/EVerest/EVerest/security/advisories/GHSA-7wmg-crc8-6xxf

x_refsource_CONFIRM

JSON source

https://cveawg.mitre.org/api/cve/CVE-2026-27815

Click to expand

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    "dateUpdated": "2026-03-26T16:31:34.779Z",
    "dateReserved": "2026-02-24T02:31:33.268Z",
    "datePublished": "2026-03-26T16:30:29.860Z",
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