CVE-2026-75806

{
  "etk_id": "ETK-2026-546",
  "cve_id": "CVE-2026-75806",
  "display_id": "CVE-2026-75806",
  "ghsa_id": "GHSA-4h8f-fwpc-hwwf",
  "euvd_id": "EUVD-2026-89011",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Improper record-length validation in OpenSSL DTLS",
  "summary": "OpenSSL DTLS 1.2 connections using AEAD cipher suites are affected by incorrect validation of protected-record lengths. An attacker able to deliver a datagram to an established association can terminate that association without authentication or key material. The issue is limited to denial of service against the targeted DTLS association.",
  "mitigation": "Upgrade OpenSSL to 4.0.3, 3.6.5, 3.5.9, 3.4.8, 3.0.23, 1.1.1zj or later.",
  "vendor": "OpenSSL",
  "product": "OpenSSL",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 4.0.0, < 4.0.3",
        ">= 3.6.0, < 3.6.5",
        ">= 3.5.0, < 3.5.9",
        ">= 3.4.0, < 3.4.8",
        ">= 3.0.0, < 3.0.23",
        ">= 1.1.1, < 1.1.1zj"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "4.0.3",
        "3.6.5",
        "3.5.9",
        "3.4.8",
        "3.0.23",
        "1.1.1zj"
      ],
      "package_name": "OpenSSL",
      "purl": null
    }
  ],
  "cwes": [
    1284
  ],
  "cvss_score": 5.3,
  "cvss_src": "nvd",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
  "epss_score": 0.0039,
  "epss_percentile": 0.3151,
  "epss_asof": "2026-10-21",
  "automation": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 74.60780025,
  "t0_at": "2026-09-29T15:32:21.457000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-09-29T15:32:21.457000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-09-29T15:32:21.457000+00:00",
      "url": "https://thehackernews.com/2026/09/openssl-fixes-high-severity-dtls-flaw.html"
    }
  }
}