{"id":"CVE-2026-68907","revision":"2558a28ba8284e5aaa71adabdacb6ee2","records":[{"revision":"2558a28ba8284e5aaa71adabdacb6ee2","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-68907","aliases":[],"title":"libIEC61850: Server-side out-of-bounds stack read in association-specific dynamic dataset creation due to reversed StringUtils_copyStringToBuffer arguments","description":"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.","state":0,"publishedAt":"2026-10-16T15:48:33.08+00:00","modifiedAt":"2026-10-16T17:05:59.282+00:00","affected":[{"ecosystem":"Vendor product","name":"libiec61850","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"mz-automation\",\n                    \"product\": \"libiec61850\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 1.6.2\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":8.2,"severity":"HIGH"}],"references":["https://github.com/mz-automation/libiec61850/security/advisories/GHSA-7v2x-39mw-2979","https://github.com/mz-automation/libiec61850/commit/062062daf4cb50c7aa76e01d6fb4d58fc9278a7d","https://github.com/mz-automation/libiec61850/releases/tag/v1.6.2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-68907","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-68907","identifiers":["CVE-2026-68907"]},"retained":false,"historicalAffected":[]}],"coverage":[]}