CVE-2026-12681_CVE-2026-12681

{
    "lastseen": "",
    "description": "Improper Validation of Specified Index, Position, or Offset in Input vulnerability in Google go-attestation. parseEfiSignatureList() does not advance the buffer past vendor bytes before reading entries. For hashSHA256SigGUID lists, this allows attacker-controlled vendor header bytes to be appended to the trusted SHA256 hash list. A crafted TPM event log could inject arbitrary SHA256 hashes into the verifier's trusted measurement database, enabling a remote attestation verifier to accept a compromised boot state. This issue affects go-attestation: through 0.6.0.",
    "published": "2026-06-24T00:49:13.500Z",
    "modified": "2026-06-24T00:49:13.500Z",
    "type": "cve",
    "title": "CVE-2026-12681",
    "source": "Google",
    "references": "https://github.com/google/go-attestation/security/advisories/GHSA-9r4w-jg96-92mv\nhttps://github.com/google/go-attestation/commit/b6e905e7ae52937f02b5ca494dd1c6a3ac7a1003\nhttps://github.com/google/go-attestation/releases/tag/v0.6.1",
    "id": "CVE-2026-12681",
    "bulletinFamily": "",
    "cwe": [
        "CWE-1285"
    ],
    "cvelist": null,
    "sourceData": "Google go-attestation 0",
    "sourceHref": "",
    "cvss": {
        "score": 8.9,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "go-attestation",
    "version": "0",
    "vendor": "Google",
    "ai_description": "Improper Validation of Specified Index, Position, or Offset in Input vulnerability allowing attacker-controlled vendor header bytes to be appended to the trusted SHA256 hash list",
    "ai_severity": "High",
    "ai_vendor": "Google",
    "ai_product": "go-attestation",
    "ai_version": "0.6.0",
    "ai_score": 8.9
}