EVerest: ISO15118 session_setup payment options overflow can corrupt EVSE state_CVE-2026-27815

{
    "lastseen": "",
    "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.",
    "published": "2026-03-26T16:30:29.860Z",
    "modified": "2026-03-28T02:25:02.011Z",
    "type": "cve",
    "title": "EVerest: ISO15118 session_setup payment options overflow can corrupt EVSE state",
    "source": "GitHub_M",
    "references": "https://github.com/EVerest/EVerest/security/advisories/GHSA-7wmg-crc8-6xxf",
    "id": "CVE-2026-27815",
    "bulletinFamily": "",
    "cwe": [
        "CWE-787"
    ],
    "cvelist": null,
    "sourceData": "EVerest everest-core < 2026.02.0",
    "sourceHref": "",
    "cvss": {
        "score": 5.5,
        "severity": "MEDIUM",
        "vector": "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",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
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        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
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        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
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            "baseScore": 0,
            "baseSeverity": "",
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "everest-core",
    "version": "< 2026.02.0",
    "vendor": "EVerest",
    "ai_description": "",
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    "ai_score": 0
}