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 mbedtls_ssl_set_hostname.
{
"sources": [
{
"modified": "2026-06-17T09:04:15.590Z",
"imported": "2026-07-17T20:47:14.980Z",
"url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2025-27809",
"database_specific": {
"status": "Analyzed"
},
"id": "CVE-2025-27809",
"published": "2025-03-25T06:15:41Z",
"html_url": "https://nvd.nist.gov/vuln/detail/CVE-2025-27809"
}
],
"license": "CC-BY-4.0"
}