CVE-2025-50343

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 v3.1 Score

9.8

CRITICAL

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

Weakness Type (CWE)

CWE-122 CWE-122

Affected Products

Vendor	Product	Versions
matio_project	matio	All

References

Exploits

https://github.com/tbeu/matio/issues/275 https://github.com/zakkanijia/POC/blob/main/matio/CVE-2025-50343/matio.md https://github.com/tbeu/matio/issues/275 https://github.com/zakkanijia/POC/blob/main/matio/CVE-2025-50343/matio.md

Frequently Asked Questions

What is CVE-2025-50343? +

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. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2025-50343? +

CVE-2025-50343 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-50343? +

CVE-2025-50343 affects products from matio_project, specifically: matio. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-50343? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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