Security advisory

{
  "id": "d164d245db94bcf33beb43b9b67e4f13a57134e2dfe52876db88b8a0b3eb1b96",
  "url": "https://osv.dev/vulnerability/CVE-2019-14462",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-14462",
    "summary": "An issue was discovered in libmodbus before 3.0.7 and 3.1.x before 3.1.5. There is an out-of-bounds read for the MODBUS_FC_WRITE_MULTIPLE_COILS case, aka VD-1302.",
    "evidence": "osv:CVE-2019-14462",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2019-14462",
      "aliases": [
        "CVE-2019-14462"
      ],
      "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/stephane/libmodbus",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "7098bed95c1b3c19922894351dce1febfe06dec5"
                },
                {
                  "introduced": "a66b1c1f6db1d64933c782e16fb37a861d2fddb6"
                },
                {
                  "fixed": "890e689b9e6a806e26d7072e142cf2b3bda62755"
                },
                {
                  "fixed": "5ccdf5ef79d742640355d1132fa9e2abc7fbaefc"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:libmodbus:libmodbus:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.0.7"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:libmodbus:libmodbus:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.1.0"
                      },
                      {
                        "fixed": "3.1.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "5ccdf5ef79d742640355d1132fa9e2abc7fbaefc"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.1.4",
            "v3.1.3",
            "v3.1.2",
            "v3.0.6",
            "v3.0.5",
            "v3.0.4",
            "v3.0.3",
            "v3.1.0",
            "v3.0.2",
            "v3.0.1",
            "v3.0.0",
            "v2.9.4",
            "v2.9.3",
            "v2.9.2",
            "v2.9.1",
            "v2.1.0",
            "v1.2.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-14462.json",
            "vanir_signatures": [
              {
                "id": "CVE-2019-14462-a09a4a45",
                "digest": {
                  "length": 8355,
                  "function_hash": "323593532108721994701969131287860941397"
                },
                "source": "https://github.com/stephane/libmodbus/commit/5ccdf5ef79d742640355d1132fa9e2abc7fbaefc",
                "target": {
                  "file": "src/modbus.c",
                  "function": "modbus_reply"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2019-14462-df7c1ff9",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "279407068311027367221353942970198111362",
                    "96805696654878289283400945749832764755",
                    "264315136239087958184637419332994110289",
                    "246930806917692553678028513742674422724",
                    "35012889513330199115050305978215585344",
                    "90122997212441459616915173969254259899",
                    "215679700694705208098697681226269763170",
                    "92971725741101217226280423154663327420",
                    "136676668559232837800794350595617926995",
                    "147375281705634079108180024146503777876",
                    "35761847310492483641475584380183528662",
                    "136615255643659512426378481080580633623"
                  ]
                },
                "source": "https://github.com/stephane/libmodbus/commit/5ccdf5ef79d742640355d1132fa9e2abc7fbaefc",
                "target": {
                  "file": "src/modbus.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:55:59Z"
          }
        }
      ],
      "modified": "2026-10-20T13:55:59.827128030Z",
      "provider": "osv",
      "references": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HAGHQFJTJCMYHW553OUWJ3YIJR6PJHB7/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PRAQZXGAZY6UGWZ6CD33QEFLL7AWW233/",
        "https://libmodbus.org/2019/stable-and-development-releases/",
        "https://lists.debian.org/debian-lts-announce/2021/11/msg00020.html",
        "https://github.com/stephane/libmodbus/commit/5ccdf5ef79d742640355d1132fa9e2abc7fbaefc"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "9.0"
                  },
                  {
                    "last_affected": "9.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*",
              "cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "29"
                  },
                  {
                    "last_affected": "29"
                  },
                  {
                    "introduced": "30"
                  },
                  {
                    "last_affected": "30"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2019-14462",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 388396,
  "published_at": "2019-07-31T23:15:10.95+00:00"
}