A Denial of Service vulnerability exists in mbed TLS 3.0.0 and earlier in the mbedtlspkcs12derivation function when an input password's length is 0.
{
"license": "CC-BY-4.0",
"sources": [
{
"id": "CVE-2021-43666",
"html_url": "https://nvd.nist.gov/vuln/detail/CVE-2021-43666",
"modified": "2025-11-03T20:15:51.127Z",
"imported": "2025-11-20T23:04:01.828Z",
"url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2021-43666",
"published": "2022-03-24T18:15:08.333Z"
}
]
}