{"id":"CVE-2026-27816","summary":"EVerest's ISO15118 update_energy_transfer_modes overflow can corrupt EVSE state","details":"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.","aliases":["GHSA-gq54-j8f4-xj8c"],"modified":"2026-04-10T05:37:24.108655Z","published":"2026-03-26T16:32:05.363Z","database_specific":{"cwe_ids":["CWE-787"],"cna_assigner":"GitHub_M","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27816.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27816.json"},{"type":"ADVISORY","url":"https://github.com/EVerest/EVerest/security/advisories/GHSA-gq54-j8f4-xj8c"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27816"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/everest/everest","events":[{"introduced":"0"},{"fixed":"b666184ef94a70008388cdec7ec41c14549e9bad"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"2026.02.0"}]}}],"versions":["2022.12.0","2022.12.1","2023.1.0","2023.10.0","2023.12.0","2023.2.0","2023.2.1","2023.3.0","2023.5.0","2023.6.0","2023.7.0","2023.8.0","2023.9.0","2023.9.1","2024.1.0","2024.10.0","2024.11.0","2024.2.0","2024.3.0-rc1","2024.4.0","2024.5.0","2024.6.0-rc1","2024.6.0-rc2","2024.7.0","2024.7.1","2024.8.0","2024.9.0-rc1","2025.1.0-rc1","2025.1.0-rc2","2025.10.0","2025.12.0","2025.12.1","2025.2.0","2025.3.0","2025.4.0-rc1","2025.5.0","2025.6.0","2025.7.0","2025.7.0-rc1","2025.8.0","2025.9.0","2026.02.0-rc1","2026.02.0-rc2","2026.02.0-rc3","2026.02.0-rc4"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-27816.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P"}]}