CVE-2026-57446

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{"affected": [{"affectedData": [{"product": "libiec61850", "vendor": "mz-automation", "versions": [{"status": "affected", "version": ">= 1.6.1, < 1.6.2"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-57446", "lastModified": "2026-10-28T19:17:36.520", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-57446", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-28T18:23:43.634635Z", "version": "2.0.3"}}]}, "published": "2026-10-16T16:18:44.207", "references": [{"source": "security-advisories@github.com", "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": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/mz-automation/libiec61850/security/advisories/GHSA-cxgr-7v9h-fj9p"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-415"}, {"lang": "en", "value": "CWE-664"}, {"lang": "en", "value": "CWE-672"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.6.1,1.6.2)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "libiec61850", "source": "cna", "vendor": "mz-automation"}, "product": "libiec61850", "vendor": "mz-automation"}], "created": "2026-10-16T18:30:14.699843+00:00", "updated": "2026-10-23T10:45:16.906064+00:00", "vendors": ["mz-automation", "mz-automation$PRODUCT$libiec61850"]}