What is CVE-2019-20019?

CVE-2019-20019 is a medium-severity vulnerability in Matio Project, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2019-12-27.

How severe is CVE-2019-20019?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Matio Project

CVE-2019-20019

An attempted excessive memory allocation was discovered in Mat_VarRead5 in mat5.c in matio 1.5.17.

Published 2019-12-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.009 (56.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Matio Project — versions 1.5.17

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

github.com/tbeu/matio/issues/130 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2019-20019?: CVE-2019-20019 is a medium-severity vulnerability in Matio Project, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2019-12-27.
How severe is CVE-2019-20019?: Medium severity. CVSS v3 base score is 6.5 out of 10.