Security advisory

{
  "id": "80b54df4a5ff408dfce8b5889d7164f38724043e60b855a1367d82bad0bf735c",
  "url": "https://osv.dev/vulnerability/CVE-2018-4281",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-4281",
    "summary": "In SwiftNIO before 1.8.0, a buffer overflow was addressed with improved size validation.",
    "evidence": "osv:CVE-2018-4281",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2018-4281",
      "aliases": [
        "CVE-2018-4281"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/apple/swift-nio",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "695afc5205aaa49fca092b94b479ff71c43d9d3c"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apple:swiftnio:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.8.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.6.1",
            "1.7.2",
            "1.4.2",
            "1.5.1",
            "1.2.1",
            "1.3.1",
            "1.0.0",
            "1.1.0",
            "1.7.1",
            "1.7.0",
            "1.6.0",
            "1.5.0",
            "1.4.1",
            "1.4.0",
            "1.3.0",
            "1.2.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-4281.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:49.461710724Z",
      "provider": "osv",
      "references": [
        "https://support.apple.com/HT208921"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-4281",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 436996,
  "published_at": "2019-01-11T18:29:03.03+00:00"
}