Security advisory

{
  "id": "0c4c56f3ee28d6a642a9ed43fc8b3bc112dd09b49e6bd8eb88760514b6a45257",
  "url": "https://osv.dev/vulnerability/CVE-2019-11490",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-11490",
    "summary": "An issue was discovered in Npcap 0.992. Sending a malformed .pcap file with the loopback adapter using either pcap_sendqueue_queue() or pcap_sendqueue_transmit() results in kernel pool corruption. This could lead to arbitrary code executing inside the Windows kernel and allow escalation of privileges.",
    "evidence": "osv:CVE-2019-11490",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2019-11490",
      "aliases": [
        "CVE-2019-11490"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/nmap/npcap",
              "type": "GIT",
              "events": [
                {
                  "introduced": "b67d7eec5ae9e15598ad760055fc89dae68b92e4"
                },
                {
                  "last_affected": "b67d7eec5ae9e15598ad760055fc89dae68b92e4"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:nmap:npcap:0.992:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0.992"
                      },
                      {
                        "last_affected": "0.992"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.992",
            "v0.992"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-11490.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:34.088828904Z",
      "provider": "osv",
      "references": [
        "https://github.com/nmap/nmap/issues/1568"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2019-11490",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 433441,
  "published_at": "2019-04-24T03:29:00.267+00:00"
}