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CVE-2025-50343

Published: Dec 30, 2025Updated: Jan 9, 2026 Sources: CVE List NVDCWE-122
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
0.3%
Top 74.1%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
No Fix Available

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 Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-122

Affected Products

matiomatio project
Library
OSS Libraries / generic-library
n/an/a
matio projectoss-projectOSS Libraries

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

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MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

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

Timeline

Published
Dec 30, 2025
Last Updated
Jan 9, 2026

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