CVE-2026-105016

{
  "etk_id": "ETK-2026-1502",
  "cve_id": "CVE-2026-105016",
  "display_id": "CVE-2026-105016",
  "ghsa_id": "GHSA-5gjq-3f94-rcf7",
  "euvd_id": "EUVD-2026-100459",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Heap buffer overflow in Microsoft.Native.Quic.MsQuic.Schannel",
  "summary": "Microsoft.Native.Quic.MsQuic.Schannel version 2.5.11-ci.156755675 is affected on Windows. An unauthenticated remote attacker may execute code by sending network traffic to an application that processes QUIC HTTP/3 over IPv6.",
  "mitigation": "Update Microsoft.Native.Quic.MsQuic.Schannel to 2.5.11-ci.159417053 or later, and apply the latest servicing update for the supported .NET release. Rebuild and redeploy self-contained applications, then restart affected applications.",
  "vendor": "nuget",
  "product": "nuget:Microsoft.Native.Quic.MsQuic.Schannel",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "= 2.5.11-ci.156755675"
      ],
      "ecosystem": "nuget",
      "fixed_versions": [
        "2.5.11-ci.159417053"
      ],
      "package_name": "Microsoft.Native.Quic.MsQuic.Schannel",
      "purl": "pkg:nuget/Microsoft.Native.Quic.MsQuic.Schannel"
    }
  ],
  "cwes": null,
  "cvss_score": 9.8,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss_score": 0.0099,
  "epss_percentile": 0.6182,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 10.729741666666667,
  "t0_at": "2026-10-13T19:01:45.693000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-13T20:18:31.789304+00:00",
      "days": 0.05331129981481481,
      "is_lower_bound": false,
      "measured_at": "2026-10-13T19:01:45.693000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-13T19:01:45.693000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-13T19:01:45.693000+00:00",
      "url": "https://github.com/advisories/GHSA-5gjq-3f94-rcf7"
    }
  }
}