CVE-2025-50343
9.8
CRITICAL
CVSS 3.1
EPSS 0.08%
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.
How to fix CVE-2025-50343
To remediate CVE-2025-50343, upgrade the affected package to a fixed version below.
- —upgrade to 1.5.19-2+deb11u1 or later
Is CVE-2025-50343 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1.5.19-2+deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |