Heap-Based Memory Corruption in Matio by The MathWorks
CVE-2025-50343

9.8CRITICAL

Key Information:

Vendor

The MathWorks

Status
Matio
Vendor
CVE Published:
30 December 2025

What is CVE-2025-50343?

A significant vulnerability was identified in Matio version 1.5.28 where a mismatch between the nfields value and the actual number of strings in the fields array can result in heap-based memory corruption. This flaw can lead to out-of-bounds reads and improper memory cleanup, potentially triggering segmentation faults or further heap corruption, hence compromising application stability. Developers using this library are advised to review their code to mitigate these risks.

References

https://github.com/tbeu/matio/issues/275
https://github.com/zakkanijia/POC/blob/main/matio/CVE-202...

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.