{
  "schema_version": "1.4.0",
  "id": "GHSA-hmwx-8xfx-mg6m",
  "modified": "2025-08-15T21:31:14Z",
  "published": "2022-05-24T19:18:51Z",
  "aliases": [
    "CVE-2021-34586"
  ],
  "details": "In the CODESYS V2 web server prior to V1.1.9.22 crafted web server requests may cause a Null pointer dereference in the CODESYS web server and may result in a denial-of-service condition.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
    }
  ],
  "affected": [],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-34586"
    },
    {
      "type": "WEB",
      "url": "https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16876&token=a3f1d937f95e7034879f4f2ea8e5a99b168256a7&download="
    },
    {
      "type": "WEB",
      "url": "https://www.tenable.com/security/research/tra-2021-47"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "severity": "HIGH",
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-10-26T10:15:00Z"
  }
}