CVE-2026-27815

CRITICAL

EVerest: ISO15118 session_setup payment options overflow can corrupt EVSE state

Title source: cna

Description

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.

References (1)

Core 1

Core References

X_Refsource_Confirm x_refsource_confirm

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

Scores

CVSS v3 9.1

EPSS 0.0027

EPSS Percentile 18.7%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-787

Status published

Products (2)

EVerest/everest-core < 2026.02.0

linuxfoundation/everest < 2026.02.0

Published Mar 26, 2026

Tracked Since Mar 26, 2026