{"id":"CVE-2026-68908","revision":"67f059de4fa64c5bb50019a08ee90e9c","records":[{"revision":"67f059de4fa64c5bb50019a08ee90e9c","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-68908","aliases":[],"title":"libIEC61850: Oversized RptID can trigger invalid free of a stack-backed visible string in the report send path","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, Reporting_RCBWriteAccessHandler accepts an RptID longer than 129 bytes in the report-control-block write path. When GI later causes sendNextReportEntrySegment to serialize the report, the function wraps rptIdBuf[130] as a temporary MmsValue and passes it to MmsValue_setVisibleString. The setter's resize path frees the stack-backed buffer, allowing a remote client to trigger an invalid free and server crash by writing the oversized RptID and then generating a report. This issue is fixed in version 1.6.2.","state":0,"publishedAt":"2026-10-16T15:47:25.012+00:00","modifiedAt":"2026-10-16T16:51:44.888+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 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-7qg8-hm25-rv5v","https://github.com/mz-automation/libiec61850/commit/5b2a69f44256b8548927d8afdd7ac5f5381abe1e","https://github.com/mz-automation/libiec61850/releases/tag/v1.6.2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-68908","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-68908","identifiers":["CVE-2026-68908"]},"retained":false,"historicalAffected":[]}],"coverage":[]}