CVE-2026-27816: Linuxfoundation Everest

Critical severity, CVSS 9.1. EPSS: 0.3% chance of exploitation in the next 30 days.

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 products

• Linuxfoundation Everest: before 2026.02.0 (fixed in 2026.02.0)

Published 2026-03-26. Last modified 2026-06-17.