{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "1.5.0"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "fcefc746fea286aeaa40d2f62240216da81c85e5"
            },
            {
              "fixed": "cfa94cbf10302bedc779703f874ee2e8387a0721"
            }
          ],
          "repo": "https://github.com/mz-automation/libiec61850",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "A denial of service vulnerability exists in the parseNormalModeParameters functionality of MZ Automation GmbH libiec61850 1.5.0. A specially-crafted series of network requests can lead to denial of service. An attacker can send a sequence of malformed iec61850 messages to trigger this vulnerability.",
  "id": "CVE-2022-21159",
  "modified": "2026-04-01T23:09:51.118055292Z",
  "published": "2022-04-15T16:15:07.720Z",
  "references": [
    {
      "type": "FIX",
      "url": "https://github.com/mz-automation/libiec61850/commit/cfa94cbf10302bedc779703f874ee2e8387a0721"
    },
    {
      "type": "EVIDENCE",
      "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2022-1467"
    },
    {
      "type": "EVIDENCE",
      "url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2022-1467"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}