{"id":"CVE-2023-51773","aliases":["EUVD-2023-56461","GHSA-3j77-72gm-5rj8"],"status":"published","title":"BACnet Stack before 1.3.2 has a decode function APDU buffer over-read in...","description":"BACnet Stack before 1.3.2 has a decode function APDU buffer over-read in bacapp_decode_application_data in bacapp.c.","severity":{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.01053,"percentile":0.64645,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-126"],"published":"2023-12-25T00:00:00Z","modified":"2026-10-28T02:30:33Z","products":[{"vendor":"bacnet_protocol_stack_project","product":"bacnet_protocol_stack"},{"vendor":"bacnetstack","product":"bacnet_stack"}],"references":[{"url":"https://sourceforge.net/p/bacnet/bugs/85/","tags":["x_transferred","Permissions Required","web"]},{"url":"https://github.com/bacnet-stack/bacnet-stack/pull/546","tags":["x_transferred","Patch","fix"]},{"url":"https://github.com/bacnet-stack/bacnet-stack/pull/546/commits/c465412a076ca6c9ddf649612f2b4e1874d8dcb8","tags":["x_transferred","Patch","web"]},{"url":"https://github.com/bacnet-stack/bacnet-stack/blob/master/CHANGELOG.md","tags":["x_transferred","Release Notes","web"]},{"url":"https://github.com/bacnet-stack/bacnet-stack/compare/bacnet-stack-1.3.1...bacnet-stack-1.3.2","tags":["x_transferred","Patch","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-51773","tags":["advisory"]},{"url":"https://sourceforge.net/p/bacnet/bugs/85"},{"url":"https://github.com/advisories/GHSA-3j77-72gm-5rj8"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/51xxx/CVE-2023-51773.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2023-51773","description":"BACnet Stack before 1.3.2 has a decode function APDU buffer over-read in bacapp_decode_application_data in bacapp.c.","status":"published","published":"2023-12-25T00:00:00Z","modified":"2024-08-02T22:48:11.271Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-126"],"updated_at":"2026-11-02T14:35:17.48054Z"}],"euvd":[{"id":"EUVD-2023-56461","description":"BACnet Stack before 1.3.2 has a decode function APDU buffer over-read in bacapp_decode_application_data in bacapp.c.","status":"published","published":"2023-12-25T00:00:00Z","modified":"2024-08-02T22:48:11Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical"}],"updated_at":"2026-11-03T03:26:07.206777Z"}],"ghsa":[{"id":"GHSA-3j77-72gm-5rj8","title":"BACnet Stack before 1.3.2 has a decode function APDU buffer over-read in...","description":"BACnet Stack before 1.3.2 has a decode function APDU buffer over-read in bacapp_decode_application_data in bacapp.c.","status":"published","published":"2024-02-29T03:33:14Z","modified":"2024-08-01T15:32:36Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical"}],"cwes":["CWE-126"],"updated_at":"2026-11-02T14:57:47.54071Z"}],"nvd":[{"id":"CVE-2023-51773","description":"BACnet Stack before 1.3.2 has a decode function APDU buffer over-read in bacapp_decode_application_data in bacapp.c.","status":"published","published":"2024-02-29T01:42:05.557Z","modified":"2026-06-17T06:41:38.01Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-126"],"updated_at":"2026-11-02T14:09:07.077422Z"}],"osv":[{"id":"CVE-2023-51773","description":"BACnet Stack before 1.3.2 has a decode function APDU buffer over-read in bacapp_decode_application_data in bacapp.c.","status":"published","published":"2023-12-25T00:00:00Z","modified":"2026-10-28T02:30:33.899289759Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:35.245372Z"}]}}