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.
Published: 2025-12-30
Score: 9.8 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4459-1 libmatio security update
History

Fri, 09 Jan 2026 19:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:matio_project:matio:1.5.28:*:*:*:*:*:*:*

Fri, 09 Jan 2026 00:15:00 +0000

Type Values Removed Values Added
Title matio: From CVEorg collector
References

Mon, 05 Jan 2026 12:30:00 +0000

Type Values Removed Values Added
First Time appeared Matio Project
Matio Project matio
Vendors & Products Matio Project
Matio Project matio

Fri, 02 Jan 2026 18:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-122
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 30 Dec 2025 20:00:00 +0000

Type Values Removed Values Added
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.
References

Subscriptions

Matio Project Matio
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-01-02T18:06:50.472Z

Reserved: 2025-06-16T00:00:00.000Z

Link: CVE-2025-50343

cve-icon Vulnrichment

Updated: 2026-01-02T15:59:56.997Z

cve-icon NVD

Status : Analyzed

Published: 2025-12-30T20:16:00.217

Modified: 2026-01-09T19:38:18.740

Link: CVE-2025-50343

cve-icon Redhat

Severity :

Publid Date: 2025-12-30T00:00:00Z

Links: CVE-2025-50343 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-01-05T12:25:21Z

Weaknesses