Mbed TLS before 2.28.10 and 3.x before 3.6.3, on the client side, accepts servers that have trusted certificates for arbitrary hostnames unless the TLS client application calls mbedtlssslset_hostname.
{
"license": "CC-BY-4.0",
"sources": [
{
"id": "CVE-2025-27809",
"html_url": "https://nvd.nist.gov/vuln/detail/CVE-2025-27809",
"url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2025-27809",
"published": "2025-03-25T06:15:41Z",
"modified": "2025-07-17T15:57:21.527Z",
"imported": "2025-11-20T23:04:02.701Z"
}
]
}