CVE-2026-27816 — EVerest's ISO15118 update_energy_transfer_modes overflow can corrupt EVSE state

CVE-2026-27816

EVerest's ISO15118 update_energy_transfer_modes overflow can corrupt EVSE state PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
EVerest / everest-core	affected < 2026.02.0

CWE

CWE-787

References

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.