{
  "cveId": "CVE-2022-35409",
  "url": "https://patchblox.com/security/cve/CVE-2022-35409",
  "summary": "CVE-2022-35409 is fixed in mbedtls on 1 platform, first by DEBIAN-CVE-2022-35409, released July 15, 2022. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "mbedtls: An issue was discovered in Mbed TLS before 2.28.1 and 3.x before 3.2.0",
  "description": "An issue was discovered in Mbed TLS before 2.28.1 and 3.x before 3.2.0. In some configurations, an unauthenticated attacker can send an invalid ClientHello message to a DTLS server that causes a heap-based buffer over-read of up to 255 bytes. This can cause a server crash or possibly information disclosure based on error responses. Affected configurations have MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE enabled and MBEDTLS_SSL_IN_CONTENT_LEN less than a threshold that depends on the configuration: 258 bytes if using mbedtls_ssl_cookie_check, and possibly up to 571 bytes with a custom cookie check function.",
  "published": "2022-07-15T14:15:09Z",
  "severity": "critical",
  "cvss": 9.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
  "epss": 0.023,
  "epssPercentile": 0.83407,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "mbedtls",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "2.28.1-1",
      "fix": "DEBIAN-CVE-2022-35409",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-35409",
      "released": "2022-07-15T14:15:09Z"
    },
    {
      "platform": "linux",
      "product": "mbedtls",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "2.28.1-1",
      "fix": "DEBIAN-CVE-2022-35409",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-35409",
      "released": "2022-07-15T14:15:09Z"
    },
    {
      "platform": "linux",
      "product": "mbedtls",
      "release": "Debian 14",
      "fixedVersion": "2.28.1-1",
      "fix": "DEBIAN-CVE-2022-35409",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-35409",
      "released": "2022-07-15T14:15:09Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}