CVE-2025-50343 — CRITICAL (9.8)

Vulnerability Description

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.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Matio Project	Matio	1.5.28

Related Weaknesses (CWE)

CWE-122

References

https://github.com/tbeu/matio/issues/275ExploitIssue TrackingThird Party Advisory
https://github.com/zakkanijia/POC/blob/main/matio/CVE-2025-50343/matio.mdExploitThird Party Advisory
https://github.com/tbeu/matio/issues/275ExploitIssue TrackingThird Party Advisory
https://github.com/zakkanijia/POC/blob/main/matio/CVE-2025-50343/matio.mdExploitThird Party Advisory

FAQ

What is CVE-2025-50343?

CVE-2025-50343 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 ...

How severe is CVE-2025-50343?

CVE-2025-50343 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2025-50343?

Check the references section above for vendor advisories and patch information. Affected products include: Matio Project Matio.