PT-2026-51648 · Google · Go-Attestation

Published 2026-06-24 · Updated 2026-06-24 · CVE-2026-12681

NVD

CVSS v4.0

8.9

High

Base vector

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

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.

Fix

Weakness Enumeration

CWE-1285

Related Identifiers

CVE-2026-12681

Affected Products

Go-Attestation

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-12681 · Security Note
• https://github.com/google/go-attestation/releases/tag/v0.6.1 · Note
• https://github.com/google/go-attestation/security/advisories/GHSA-9r4w-jg96-92mv · Note
• https://github.com/google/go-attestation/commit/b6e905e7ae52937f02b5ca494dd1c6a3ac7a1003 · Note