{"id":"CVE-2025-50343","details":"An issue was discovered in matio 1.5.28. A heap-based memory corruption can occur in Mat_VarCreateStruct() when the nfields value does not match the actual number of strings in the fields array. This leads to out-of-bounds reads and invalid memory frees during cleanup, potentially causing a segmentation fault or heap corruption.","modified":"2026-03-23T05:07:43.066860023Z","published":"2025-12-30T20:16:00.217Z","related":["openSUSE-SU-2026:10094-1"],"references":[{"type":"REPORT","url":"https://github.com/tbeu/matio/issues/275"},{"type":"EVIDENCE","url":"https://github.com/zakkanijia/POC/blob/main/matio/CVE-2025-50343/matio.md"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/tbeu/matio","events":[{"introduced":"0"},{"last_affected":"4677b3fd4030c52e0fe45a863c840c78fb56f9a3"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"1.5.28"}]}}],"versions":["v1.5.0","v1.5.0b1","v1.5.1","v1.5.10","v1.5.11","v1.5.12","v1.5.13","v1.5.14","v1.5.15","v1.5.16","v1.5.17","v1.5.18","v1.5.19","v1.5.2","v1.5.20","v1.5.21","v1.5.22","v1.5.23","v1.5.24","v1.5.25","v1.5.26","v1.5.27","v1.5.28","v1.5.4","v1.5.5","v1.5.6","v1.5.7","v1.5.8","v1.5.9"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-50343.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:H/I:H/A:H"}]}