EVerest's ISO15118 update_energy_transfer_modes overflow can corrupt EVSE state

EVerest is an EV charging software stack. Prior to versions to 2026.02.0, ISO15118_chargerImpl::handle_update_energy_transfer_modes copies a variable-length list into a fixed-size array of length 6 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-gq54-j8f4-xj8c

https://github.com/EVerest/EVerest/security/advisories/GHSA-gq54-j8f4-xj8c

x_refsource_CONFIRM

JSON source

https://cveawg.mitre.org/api/cve/CVE-2026-27816

Click to expand

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