{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.4.365.48"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "56a54066a19590da7f61b73b98af6a8f09b86bc2"
            }
          ],
          "repo": "https://github.com/opcfoundation/ua-.netstandard",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "OPC Foundation UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow.",
  "id": "CVE-2021-27432",
  "modified": "2026-03-13T21:48:16.958569174Z",
  "published": "2021-05-20T16:15:07.967Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}