Security advisory

{
  "id": "fd7373dc68e1da9e92a830ad66f561ac89371c3ceba7388301842f837db6e9e8",
  "url": "https://osv.dev/vulnerability/CVE-2020-1939",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-1939",
    "summary": "The Apache NuttX (Incubating) project provides an optional separate \"apps\" repository which contains various optional components and example programs. One of these, ftpd, had a NULL pointer dereference bug. The NuttX RTOS itself is not affected. Users of the optional apps repository are affected only if they have enabled ftpd. Versions 6.15 to 8.2 are affected.",
    "evidence": "osv:CVE-2020-1939",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2020-1939",
      "aliases": [
        "CVE-2020-1939"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/apache/nuttx",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c9cbea94a6b14cb1e5656ed7c22e199a61a89749"
                },
                {
                  "last_affected": "66401c8960c5211ded41ae4f60bfb1746a84bd50"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apache:nuttx:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "6.15"
                      },
                      {
                        "last_affected": "8.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "nuttx-8.2",
            "nuttx-8.1",
            "nuttx-7.31",
            "nuttx-7.30",
            "nuttx-7.29",
            "nuttx-7.28",
            "nuttx-7.27",
            "nuttx-7.26",
            "nuttx-7.25",
            "nuttx-7.24",
            "nuttx-7.23",
            "nuttx-7.22",
            "nuttx-7.21",
            "nuttx-7.20",
            "nuttx-7.18",
            "nuttx-7.17",
            "nuttx-7.16",
            "nuttx-7.15",
            "nuttx-7.14",
            "nuttx-7.13",
            "nuttx-7.12",
            "nuttx-7.11",
            "nuttx-7.10",
            "nuttx-7.9",
            "nuttx-7.8",
            "nuttx-7.6",
            "nuttx-7.5",
            "nuttx-7.4",
            "nuttx-7.3",
            "nuttx-7.2",
            "nuttx-7.1",
            "nuttx-6.33",
            "nuttx-6.32",
            "nuttx-6.31",
            "nuttx-6.30",
            "nuttx-6.29",
            "nuttx-6.28",
            "nuttx-6.27",
            "nuttx-6.26",
            "nuttx-6.25",
            "nuttx-6.24",
            "nuttx-6.23",
            "nuttx-6.22",
            "nuttx-6.21",
            "nuttx-6.20",
            "nuttx-6.19",
            "nuttx-6.18",
            "nuttx-6.17",
            "nuttx-6.16",
            "nuttx-6.15"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-1939.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:16.841637914Z",
      "provider": "osv",
      "references": [
        "https://lists.apache.org/thread.html/re3adc65ff4d8d9c34e5bccba3941a28cbb0a47191c150df2727e101d%40%3Cdev.nuttx.apache.org%3E"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-1939",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 429427,
  "published_at": "2020-05-12T15:15:12.533+00:00"
}