{"id":"CVE-2026-12681","revision":"b7d2e2f3258445e6a23b795d739f964c","records":[{"revision":"b7d2e2f3258445e6a23b795d739f964c","observedAt":"2026-10-25T05:17:25.909+00:00","statement":{"source":"nvd","id":"CVE-2026-12681","aliases":[],"title":"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 all…","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.","state":0,"publishedAt":"2026-06-24T02:16:28.06+00:00","modifiedAt":"2026-06-25T19:51:26.187+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · cve-coordination@google.com · Secondary","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":8.9,"severity":"HIGH"}],"references":["https://github.com/google/go-attestation/commit/b6e905e7ae52937f02b5ca494dd1c6a3ac7a1003","https://github.com/google/go-attestation/releases/tag/v0.6.1","https://github.com/google/go-attestation/security/advisories/GHSA-9r4w-jg96-92mv"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-12681","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Awaiting Analysis","weaknesses":["CWE-1285"],"productCriteria":[],"sourceDates":{"published":"2026-06-24T02:16:28.060","lastModified":"2026-06-25T19:51:26.187"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-12681","identifiers":["CVE-2026-12681"]},"retained":false,"historicalAffected":[]}],"coverage":[]}