{"id":"EUVD-2026-38641","revision":"b0b150dff4714835aa9d4729373377e8","records":[{"revision":"b0b150dff4714835aa9d4729373377e8","observedAt":"2026-11-05T04:55:58.882+00:00","statement":{"source":"euvd","id":"EUVD-2026-38641","aliases":["CVE-2026-12681"],"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":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","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","score":8.9,"severity":null}],"references":["https://github.com/google/go-attestation/security/advisories/GHSA-9r4w-jg96-92mv","https://github.com/google/go-attestation/commit/b6e905e7ae52937f02b5ca494dd1c6a3ac7a1003","https://github.com/google/go-attestation/releases/tag/v0.6.1"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-38641","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Jun 24, 2026, 12:49:13 AM","dateUpdated":"Jun 24, 2026, 12:57:35 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-38641","identifiers":["EUVD-2026-38641","CVE-2026-12681"]},"retained":false,"historicalAffected":[]}],"coverage":[]}