An issue was discovered in Arm Mbed TLS before 2.23.0. A remote attacker can recover plaintext because a certain Lucky 13 countermeasure doesn't properly consider the case of a hardware accelerator.
{
"license": "CC-BY-4.0",
"sources": [
{
"id": "CVE-2020-36423",
"published": "2021-07-19T17:15:11.223Z",
"imported": "2026-07-17T20:44:52.751Z",
"url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2020-36423",
"modified": "2026-06-17T03:15:27.560Z",
"html_url": "https://nvd.nist.gov/vuln/detail/CVE-2020-36423",
"database_specific": {
"status": "Modified"
}
}
]
}