The ML-KEM ARM64 NEON ciphertext comparison only compares half of the input, breaking the Fujisaki-Okamoto transform's implicit rejection and weakening IND-CCA2 security on that code path. The constant-time comparison effectively ignored part of the re-encrypted ciphertext, so a decapsulating party could fail to detect a manipulated ciphertext and proceed without the standard's required implicit rejection.
{
"sources": [
{
"url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-6330",
"html_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6330",
"id": "CVE-2026-6330",
"imported": "2026-07-14T21:22:49.794Z",
"modified": "2026-06-27T19:50:17.420Z",
"published": "2026-06-25T22:17:02.887Z",
"database_specific": {
"status": "Analyzed"
}
},
{
"url": "https://api.github.com/advisories/GHSA-89v8-3927-wfcg",
"published": "2026-06-26T00:32:06Z",
"html_url": "https://github.com/advisories/GHSA-89v8-3927-wfcg",
"imported": "2026-07-14T21:22:55.602Z",
"id": "GHSA-89v8-3927-wfcg",
"modified": "2026-06-27T21:30:28Z"
},
{
"url": "https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-39570",
"html_url": "https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-39570",
"modified": "2026-06-26T10:20:49Z",
"imported": "2026-07-14T21:22:51.437Z",
"published": "2026-06-25T21:01:19Z",
"id": "EUVD-2026-39570"
}
],
"license": "CC-BY-4.0"
}