{"id":"CVE-2019-12480","aliases":["EUVD-2019-4076","GHSA-cc8w-j726-c7gj"],"status":"published","title":"BACnet Protocol Stack through 0.8.6 could allow an unauthenticated, remote attacker to cause a...","description":"BACnet Protocol Stack through 0.8.6 has a segmentation fault leading to denial of service in BACnet APDU Layer because a malformed DCC in AtomicWriteFile, AtomicReadFile and DeviceCommunicationControl services. An unauthenticated remote attacker could cause a denial of service (bacserv daemon crash) because there is an invalid read in bacdcode.c during parsing of alarm tag numbers.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.3389,"percentile":0.98403,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-125"],"published":"2019-05-30T21:53:09Z","modified":"2026-06-17T02:14:44Z","exploits":[{"source":"exploitdb","id":"EDB-47148","title":"BACnet Stack 0.8.6 - Denial of Service","type":"dos","platform":"linux","date":"2019-07-22","url":"https://www.exploit-db.com/exploits/47148"}],"products":[{"vendor":"bacnet_protocol_stack_project","product":"bacnet_protocol_stack"}],"references":[{"url":"https://sourceforge.net/p/bacnet/bugs/62/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://sourceforge.net/p/bacnet/code/3220","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://sourceforge.net/p/bacnet/code/3223","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://sourceforge.net/p/bacnet/code/3224","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://sourceforge.net/p/bacnet/code/3225","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://packetstormsecurity.com/files/153716/BACnet-Stack-0.8.6-Denial-Of-Service.html","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://1modm.github.io/CVE-2019-12480.html","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-12480"},{"url":"https://github.com/advisories/GHSA-cc8w-j726-c7gj"}],"sources":{"cve":[{"id":"CVE-2019-12480","description":"BACnet Protocol Stack through 0.8.6 has a segmentation fault leading to denial of service in BACnet APDU Layer because a malformed DCC in AtomicWriteFile, AtomicReadFile and DeviceCommunicationControl services. An unauthenticated remote attacker could cause a denial of service (bacserv daemon crash) because there is an invalid read in bacdcode.c during parsing of alarm tag numbers.","status":"published","published":"2019-05-30T21:53:09Z","modified":"2024-08-04T23:24:38.525Z","updated_at":"2026-11-02T14:20:24.025419Z"}],"euvd":[{"id":"EUVD-2019-4076","description":"BACnet Protocol Stack through 0.8.6 has a segmentation fault leading to denial of service in BACnet APDU Layer because a malformed DCC in AtomicWriteFile, AtomicReadFile and DeviceCommunicationControl services. An unauthenticated remote attacker could cause a denial of service (bacserv daemon crash) because there is an invalid read in bacdcode.c during parsing of alarm tag numbers.","status":"published","published":"2019-05-30T21:53:09Z","modified":"2024-08-04T23:24:38Z","updated_at":"2026-11-03T02:40:45.973526Z"}],"ghsa":[{"id":"GHSA-cc8w-j726-c7gj","title":"BACnet Protocol Stack through 0.8.6 could allow an unauthenticated, remote attacker to cause a...","description":"BACnet Protocol Stack through 0.8.6 could allow an unauthenticated, remote attacker to cause a denial of service (bacserv daemon crash) because there is an invalid read in bacdcode.c during parsing of alarm tag numbers.","status":"published","published":"2022-05-24T22:00:02Z","modified":"2023-01-30T05:03:55Z","updated_at":"2026-11-02T14:46:56.128795Z"}],"nvd":[{"id":"CVE-2019-12480","description":"BACnet Protocol Stack through 0.8.6 has a segmentation fault leading to denial of service in BACnet APDU Layer because a malformed DCC in AtomicWriteFile, AtomicReadFile and DeviceCommunicationControl services. An unauthenticated remote attacker could cause a denial of service (bacserv daemon crash) because there is an invalid read in bacdcode.c during parsing of alarm tag numbers.","status":"published","published":"2019-05-30T22:29:00.183Z","modified":"2026-06-17T02:14:44.6Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:05:14.729983Z"}]}}