{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2026.02.0"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "b666184ef94a70008388cdec7ec41c14549e9bad"
            }
          ],
          "repo": "https://github.com/everest/everest",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-gq54-j8f4-xj8c"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-787"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27816.json"
  },
  "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.",
  "id": "CVE-2026-27816",
  "modified": "2026-04-01T23:08:38.979858356Z",
  "published": "2026-03-26T16:32:05.363Z",
  "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"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "EVerest's ISO15118 update_energy_transfer_modes overflow can corrupt EVSE state"
}