{"id":"CVE-2021-45769","details":"A NULL pointer dereference in AcseConnection_parseMessage at src/mms/iso_acse/acse.c of libiec61850 v1.5.0 can lead to a segmentation fault or application crash.","modified":"2026-04-10T04:41:40.477853Z","published":"2022-01-14T20:15:15.063Z","references":[{"type":"FIX","url":"https://github.com/mz-automation/libiec61850/issues/368"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mz-automation/libiec61850","events":[{"introduced":"0"},{"last_affected":"fcefc746fea286aeaa40d2f62240216da81c85e5"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"1.5.0"}]}}],"versions":["v1.0.0","v1.0.1","v1.1","v1.2.0","v1.2.1","v1.2.2","v1.3.0","v1.4.0","v1.4.1","v1.5.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-45769.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}