CVE-2025-50343 Affecting libmatio package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU2004-LIBMATIO-14849694
- published6 Jan 2026
- disclosed30 Dec 2025
Introduced: 30 Dec 2025
CVE-2025-50343 (opens in a new tab)How to fix?
There is no fixed version for Ubuntu:20.04 libmatio.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libmatio package and not the libmatio package as distributed by Ubuntu.
See How to fix? for Ubuntu:20.04 relevant fixed versions and status.
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.