CVE-2026-12681

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-12681
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-12681.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-12681
Aliases
Downstream
Published
2026-06-24T00:49:13.500Z
Modified
2026-07-15T01:49:07.808948545Z
Severity
  • 8.9 (High) CVSS_V4 - 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 CVSS Calculator
Summary
[none]
Details

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.

Database specific 
{
    "cwe_ids": [
        "CWE-1285"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/12xxx/CVE-2026-12681.json",
    "cna_assigner": "Google"
}
References

Affected packages

Git / github.com/google/go-attestation

Affected ranges

Type
GIT
Repo
https://github.com/google/go-attestation
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
de04cbed9b9338f836a2091775e53080dcd5d870
Fixed
b6e905e7ae52937f02b5ca494dd1c6a3ac7a1003
Database specific 
{
    "source": [
        "DESCRIPTION",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.6.0"
        }
    ]
}

Affected versions

v0.*
v0.1.1
v0.1.2
v0.1.3
v0.2.0
v0.2.1
v0.2.2
v0.3.0
v0.3.1
v0.3.2
v0.4.0
v0.4.1
v0.4.2
v0.4.3
v0.5.0
v0.5.1
v0.6.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-12681.json"