{"id":"CVE-2026-57446","revision":"4c4bfa1901804b50ac4931de80ac9f63","records":[{"revision":"4c4bfa1901804b50ac4931de80ac9f63","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-57446","aliases":[],"title":"libIEC61850: Server-side double free in MMS ObtainFile task reuse due to stale FILE* handle","description":"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.","state":0,"publishedAt":"2026-10-16T15:46:33.549+00:00","modifiedAt":"2026-10-16T15:46:33.549+00:00","affected":[{"ecosystem":"Vendor product","name":"libiec61850","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"mz-automation\",\n                    \"product\": \"libiec61850\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 1.6.1, < 1.6.2\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/mz-automation/libiec61850/security/advisories/GHSA-cxgr-7v9h-fj9p","https://github.com/mz-automation/libiec61850/commit/d86b4a9c7a903641819235e1678b18901518f3cd","https://github.com/mz-automation/libiec61850/releases/tag/v1.6.2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-57446","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-57446","identifiers":["CVE-2026-57446"]},"retained":false,"historicalAffected":[]}],"coverage":[]}