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.
{
"cna_assigner": "wolfSSL",
"cwe_ids": [
"CWE-327"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6330.json"
}{
"extracted_events": [
{
"range": [
{
"introduced": "5.7.4"
},
{
"last_affected": "5.9.1"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"cpe": "cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.7.4"
},
{
"fixed": "5.9.2"
}
],
"source": "CPE_RANGE"
}
]
}