CVE-2025-50343
Published: 30 December 2025
Summary
CVE-2025-50343 is a critical-severity Heap-based Buffer Overflow (CWE-122) vulnerability in Matio Project Matio. Its CVSS base score is 9.8 (Critical).
Operationally, ranked at the 26.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-205846
Vulnerability 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…
more
during cleanup, potentially causing a segmentation fault or heap corruption.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.