{"schema":"threatline.record/2","record":{"id":"CVE-2026-68907","aliases":["GHSA-7v2x-39mw-2979"],"summary":"libIEC61850: Server-side out-of-bounds stack read in association-specific dynamic dataset creation due to reversed StringUtils_copyStringToBuffer arguments","details":"libIEC61850 is an open-source implementation of IEC 61850 client and server protocols including MMS, GOOSE, Sampled Values, and R-Session. Prior to 1.6.2, checkDataSetAccess reverses the source and destination arguments to StringUtils_copyStringToBuffer while constructing an MMS_ASSOCIATION_SPECIFIC dataset reference. The helper treats uninitialized dataSetRef[130] storage as a source string, causing strlen to read beyond the stack buffer, and then copies those bytes into the caller-owned listName buffer. A remote defineNamedVariableList request can crash servers that have dynamic dataset service enabled and a dataset access handler installed; the advisory also observes caller stack corruption but establishes denial of service as the primary impact. 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-2026-68907","source_modified_at":"2026-10-16T17:05:59.282Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"libiec61850","vendor":"mz-automation","versions":[{"version":"< 1.6.2","status":"affected"}],"defaultStatus":null}],"fixed_versions":[],"cvss":8.2,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00371,"percentile":0.29884,"score_date":"2026-10-23"},"published_at":"2026-10-16T15:48:33.080Z","modified_at":"2026-10-16T17:05:59.282Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-68907","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-16T17:05:59.282Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-68907","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/mz-automation/libiec61850/security/advisories/GHSA-7v2x-39mw-2979","tags":["x_refsource_CONFIRM"]},{"source":"CVE List","url":"https://github.com/mz-automation/libiec61850/commit/062062daf4cb50c7aa76e01d6fb4d58fc9278a7d","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","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-16T16:32:10.643697Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-16T17:05:59.282Z","content_hash":"0b291f5843ca49c833fa059ff4153f0c736a41c098e59aed5d78d3128e42fc71"}}