{"id":"CVE-2026-82414","summary":"BACnet Stack: MS/TP COBS decode overflow","details":"BACnet Stack is a BACnet open source protocol stack C library for embedded systems. From versions 1.4.0 to before 1.4.6, 1.5.0 to before 1.5.1, and 1.6.0 to before 1.6.1, the BACnet MS/TP receive path decodes COBS frames into an output pointer inside the same fixed input buffer, but passes the full input-buffer size as the decode capacity. A long valid COBS payload can therefore write past the end of the actual remaining buffer. This issue has been patched in versions 1.4.6, 1.5.1, 1.6.1, and 1.7.0.","aliases":["GHSA-8456-m9x4-j6mc"],"modified":"2026-11-14T10:45:39.513386641Z","published":"2026-11-13T18:40:31.749Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-787"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82414.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82414.json"},{"type":"FIX","url":"https://github.com/bacnet-stack/bacnet-stack/pull/1425"},{"type":"ADVISORY","url":"https://github.com/bacnet-stack/bacnet-stack/security/advisories/GHSA-8456-m9x4-j6mc"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-82414"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/bacnet-stack/bacnet-stack","events":[{"introduced":"f332225b196aa66503faae64f92bef113fe89ab2"},{"fixed":"92e503566c990269f85ee15370d88415ad7ff6fb"},{"introduced":"61a7a53bea5b5bc4724646abbce601fd26c364b6"},{"fixed":"3a74c74a8139526e34da32c6cc41ed7c71aaded5"},{"introduced":"9bc3cfa07aab98852de432fa24079f4b4b6b7eed"},{"fixed":"7a53f0a72a92de1621d30fc63703a29afe12bfaf"}],"database_specific":{"extracted_events":[{"range":[{"introduced":"1.4.0"},{"fixed":"1.4.6"}],"source":"AFFECTED_FIELD","strategy":"StringRangeExpression"},{"range":[{"introduced":"1.5.0"},{"fixed":"1.5.1"}],"source":"AFFECTED_FIELD","strategy":"StringRangeExpression"},{"range":[{"introduced":"1.6.0"},{"fixed":"1.6.1"}],"source":"AFFECTED_FIELD","strategy":"StringRangeExpression"}]}}],"versions":["bacnet-stack-1.4.5","bacnet-stack-1.6.0","bacnet-stack-1.4.4","bacnet-stack-1.5.0","bacnet-stack-1.4.3","bacnet-stack-1.4.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-82414.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}