{"id":"CVE-2026-57446","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-57446","generatedAt":"2026-10-28T01:51:57.840Z","title":"Servers with the MMS file service and ObtainFile enabled can therefore be crashed remotely by the success-then-failure request sequence.","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.","published":"2026-10-16T16:18:44.000Z","lastModified":"2026-10-16T20:04:30.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},"cwe":["CWE-415","CWE-664","CWE-672"],"affected":[],"epss":{"score":0.00401,"percentile":0.34102,"date":"2026-10-26","history":[{"date":"2026-10-17","score":0.00401,"percentile":0.32807}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.40%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-16T16:18:44.000Z","detail":{"score":"5.3","severity":"MEDIUM","publishedAt":"2026-10-16T16:18:44.207Z"},"summary":"New CVE, medium severity (CVSS 5.3)."}],"references":[{"url":"https://github.com/mz-automation/libiec61850/commit/d86b4a9c7a903641819235e1678b18901518f3cd","source":"security-advisories@github.com"},{"url":"https://github.com/mz-automation/libiec61850/releases/tag/v1.6.2","source":"security-advisories@github.com"},{"url":"https://github.com/mz-automation/libiec61850/security/advisories/GHSA-cxgr-7v9h-fj9p","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-57446","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}