Security advisory

{
  "id": "7e5db78805269608ae093300ae4d88fb00484027617bc026f6b1512e28858eb0",
  "url": "https://osv.dev/vulnerability/CVE-2021-38425",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-38425",
    "summary": "eProsima Fast DDS versions prior to 2.4.0 (#2269) are susceptible to exploitation when an attacker sends a specially crafted packet to flood a target device with unwanted traffic, which may result in a denial-of-service condition and information exposure.",
    "evidence": "osv:CVE-2021-38425",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2021-38425",
      "aliases": [
        "CVE-2021-38425"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/eprosima/fast-dds",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "14cf9c7543b5437c26bc4215700fb0544c763ec7"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:eprosima:fast_dds:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.4.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.3.0-1",
            "v2.3.0-api",
            "v2.2.0",
            "v2.1.0",
            "2.0.0-rc",
            "2.0.0-beta",
            "v1.7.2",
            "Discovery-Time_Data_Typing",
            "v1.9.0",
            "v1.9.0-beta-2",
            "v1.9.0-beta",
            "v1.8.0-2",
            "v1.8.0",
            "v1.7.1",
            "v1.7.0",
            "v1.6.0",
            "v1.5.0",
            "v1.4.0",
            "v1.3.0",
            "v1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-38425.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:52.587688892Z",
      "provider": "osv",
      "references": [
        "https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02",
        "https://github.com/eProsima/Fast-DDS"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-38425",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384714,
  "published_at": "2022-05-05T17:15:09.06+00:00"
}