{"cve":"CVE-2026-12681","nvd":{"published":"2026-06-24T02:16:28.060","modified":"2026-10-25T23:10:00.167","status":"Awaiting Analysis","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.","cvss_v4":{"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},"cvss_v3":null,"cwes":["CWE-1285"],"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"],"products":[],"source":"nvd","synced_at":"2026-10-25T23:44:33.281319194+00:00"},"epss":{"cve":"CVE-2026-12681","score":0.00268,"percentile":0.18821,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-9r4w-jg96-92mv","url":"https://osv.dev/vulnerability/GHSA-9r4w-jg96-92mv","summary":"Go-Attestation: Hash injection into trusted measurement list via unskipped SignatureHeaderSize vendor bytes in parseEfiSignatureList()","modified":"2026-09-12T05:15:04.693981733Z","packages":[{"ecosystem":"Go","name":"github.com/google/go-attestation","purl":"pkg:golang/github.com/google/go-attestation","ranges":["<0.6.1"],"fixed":["0.6.1"]}]},{"id":"GO-2026-5298","url":"https://osv.dev/vulnerability/GO-2026-5298","summary":"Go-Attestation: Hash injection into trusted measurement list via unskipped SignatureHeaderSize vendor bytes in parseEfiSignatureList() in github.com/google/go-attestation","modified":"2026-08-30T02:10:50.604598602Z","packages":[{"ecosystem":"Go","name":"github.com/google/go-attestation","purl":"pkg:golang/github.com/google/go-attestation","ranges":["all versions"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}