{"id":"CVE-2026-62974","summary":"BACnet Stack: Remote unauthenticated DoS in `Life_Safety_Zone` `PROP_ZONE_MEMBERS` WriteProperty parsing","details":"BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to versions 1.4.5, 1.5.1, and 1.6.0, a malformed but non-empty BACnet WriteProperty request can drive the official server demo into a non-terminating request-processing loop with repeated heap-backed side effects. This results in a remote unauthenticated denial of service via uncontrolled resource consumption and a non-terminating request path. This issue has been patched in versions 1.4.5, 1.5.1, and 1.6.0.","aliases":["GHSA-2c8x-f46r-8phh"],"modified":"2026-11-14T02:47:35.206292618Z","published":"2026-11-13T16:00:10.321Z","database_specific":{"cwe_ids":["CWE-835"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62974.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62974.json"},{"type":"FIX","url":"https://github.com/bacnet-stack/bacnet-stack/pull/1410"},{"type":"ADVISORY","url":"https://github.com/bacnet-stack/bacnet-stack/security/advisories/GHSA-2c8x-f46r-8phh"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-62974"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/bacnet-stack/bacnet-stack","events":[{"introduced":"0"},{"fixed":"289b90d8d109b00594667a82007255bb71b36a6b"},{"fixed":"3a74c74a8139526e34da32c6cc41ed7c71aaded5"},{"fixed":"9bc3cfa07aab98852de432fa24079f4b4b6b7eed"}],"database_specific":{"extracted_events":[{"strategy":"StringRangeExpression","range":[{"introduced":"0"},{"fixed":"1.4.5"}],"source":"AFFECTED_FIELD"},{"range":[{"introduced":"0"},{"fixed":"1.5.1"}],"source":"AFFECTED_FIELD","strategy":"StringRangeExpression"},{"range":[{"introduced":"0"},{"fixed":"1.6.0"}],"source":"AFFECTED_FIELD","strategy":"StringRangeExpression"}]}}],"versions":["bacnet-stack-1.4.4","bacnet-stack-1.5.0","bacnet-stack-1.4.3","bacnet-stack-1.4.2","bacnet-stack-1.4.1","bacnet-stack-1.4.0","bacnet-stack-1.3.8","bacnet-stack-1.3.7","bacnet-stack-1.3.6","bacnet-stack-1.3.5","bacnet-stack-1.3.4","bacnet-stack-1.3.3","bacnet-stack-1.3.2","bacnet-stack-1.3.1","bacnet-stack-1.3.0","bacnet-stack-1.2.0","bacnet-stack-1.1.1","bacnet-stack-1.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-62974.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}