What is CVE-2020-19497?

CVE-2020-19497 is a high-severity vulnerability in Matio Project, classified under Integer Overflow or Wraparound. CVSS score: 8.8/10. Published 2021-07-21.

How severe is CVE-2020-19497?

High severity. CVSS v3 base score is 8.8 out of 10.

Integer overflow in Matio Project

CVE-2020-19497

Integer overflow vulnerability in Mat_VarReadNextInfo5 in mat5.c in tbeu matio (aka MAT File I/O Library) 1.5.17, allows attackers to cause a Denial of Service or possibly other unspecified impacts.

Vulnerability class: Integer Overflow

Published 2021-07-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.014 (70.8th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 70.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Matio Project — versions 1.5.17

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

github.com/tbeu/matio/issues/121 (Exploit, Patch, Third Party Advisory)
github.com/tbeu/matio/commit/5fa49ef9fc4368fe3d19b5fdaa36d8fa5e7f4606 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2020-19497?: CVE-2020-19497 is a high-severity vulnerability in Matio Project, classified under Integer Overflow or Wraparound. CVSS score: 8.8/10. Published 2021-07-21.
How severe is CVE-2020-19497?: High severity. CVSS v3 base score is 8.8 out of 10.