{"schema":"threatline.record/2","record":{"id":"CVE-2026-57446","aliases":["GHSA-cxgr-7v9h-fj9p"],"summary":"libIEC61850: Server-side double free in MMS ObtainFile task reuse due to stale FILE* handle","details":"libIEC61850 is an open-source implementation of IEC 61850 client and server protocols including MMS, GOOSE, Sampled Values, and R-Session. From 1.6.1 until 1.6.2, a successful MMS ObtainFile operation closes MmsObtainFileTask::fileHandle but leaves the stale non-NULL value in a task marked MMS_FILE_UPLOAD_STATE_NOT_USED. If a later ObtainFile request reuses that task and destination creation fails, MMS_FILE_UPLOAD_STATE_SEND_OBTAIN_FILE_ERROR_DESTINATION cleanup closes the stale FILE object again. Servers with the MMS file service and ObtainFile enabled can therefore be crashed remotely by the success-then-failure request sequence. This issue is fixed in version 1.6.2.","categories":["Unclassified"],"product":"libiec61850","vendor":"mz-automation","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-57446","source_modified_at":"2026-10-16T15:46:33.549Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"libiec61850","vendor":"mz-automation","versions":[{"version":">= 1.6.1, < 1.6.2","status":"affected"}],"defaultStatus":null},{"source":"GitHub Advisory Database","source_url":"https://github.com/mz-automation/libiec61850/security/advisories/GHSA-cxgr-7v9h-fj9p","source_modified_at":"2026-07-05T10:19:58Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"ecosystem":"","name":"libiec61850"},"range":"= 1.6.1"}],"fixed_versions":[{"source":"GitHub Advisory Database","source_url":"https://github.com/mz-automation/libiec61850/security/advisories/GHSA-cxgr-7v9h-fj9p","source_modified_at":"2026-07-05T10:19:58Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"ecosystem":"","name":"libiec61850"},"version":"1.6.2"}],"cvss":5.3,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00401,"percentile":0.33208,"score_date":"2026-10-23"},"published_at":"2026-10-16T15:46:33.549Z","modified_at":"2026-10-16T15:46:33.549Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-57446","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-16T15:46:33.549Z"},{"source":"GitHub Advisory Database","url":"https://github.com/mz-automation/libiec61850/security/advisories/GHSA-cxgr-7v9h-fj9p","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-07-05T10:19:58Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-57446","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","GitHub Advisory Database","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/mz-automation/libiec61850/security/advisories/GHSA-cxgr-7v9h-fj9p","tags":["x_refsource_CONFIRM"]},{"source":"CVE List","url":"https://github.com/mz-automation/libiec61850/commit/d86b4a9c7a903641819235e1678b18901518f3cd","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/mz-automation/libiec61850/releases/tag/v1.6.2","tags":["x_refsource_MISC"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-16T15:46:33.549Z","content_hash":"dc4773ecf73e59230f4176ba50592bdc26ac8b26ec3788b5cdd2b148bafbd8a0"}}