Security advisory

{
  "id": "fff4d2c4a328a93a2bd6624c6b3696255de61191ae7a3de13a74d1c705d1b085",
  "url": "https://osv.dev/vulnerability/CVE-2021-3246",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-3246",
    "summary": "A heap buffer overflow vulnerability in msadpcm_decode_block of libsndfile 1.0.30 allows attackers to execute arbitrary code via a crafted WAV file.",
    "evidence": "osv:CVE-2021-3246",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-3246",
      "aliases": [
        "CVE-2021-3246"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/libsndfile/libsndfile",
              "type": "GIT",
              "events": [
                {
                  "introduced": "68958f9c9199dad97dcd10700df3746b2cd9b8a3"
                },
                {
                  "last_affected": "68958f9c9199dad97dcd10700df3746b2cd9b8a3"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:libsndfile_project:libsndfile:1.0.30:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.0.30"
                      },
                      {
                        "last_affected": "1.0.30"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.0.30",
            "v1.0.30"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3246.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:45.041555776Z",
      "provider": "osv",
      "references": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DLUDCEMMPRA3IYYYHVZUOUZXI65FU37V/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T7LNW4AVDVL3BU3N3KGVFLTYFASBVCIF/",
        "https://lists.debian.org/debian-lts-announce/2021/07/msg00024.html",
        "https://security.gentoo.org/glsa/202309-11",
        "https://www.debian.org/security/2021/dsa-4947",
        "https://github.com/libsndfile/libsndfile/issues/687"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
              "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "9.0"
                  },
                  {
                    "last_affected": "9.0"
                  },
                  {
                    "introduced": "10.0"
                  },
                  {
                    "last_affected": "10.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
              "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "33"
                  },
                  {
                    "last_affected": "33"
                  },
                  {
                    "introduced": "34"
                  },
                  {
                    "last_affected": "34"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-3246",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384573,
  "published_at": "2021-07-20T15:15:11.053+00:00"
}