How severe is CVE-2019-20019?

CVE-2019-20019 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2019-20019 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-20019?

CVE-2019-20019 affects Matio Project Matio. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-20019?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-20019 published?

CVE-2019-20019 was published on 2019-12-27 and last updated on 2026-06-17.

CVE-2019-20019

CVE-2019-20019 is a medium-severity vulnerability in Matio Project Matio with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-770.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-770
Affected product: Matio Project Matio
Published: 2019-12-27
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2019-20019?: An attempted excessive memory allocation was discovered in Mat_VarRead5 in mat5.c in matio 1.5.17.
How severe is CVE-2019-20019?: CVE-2019-20019 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2019-20019 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-20019?: CVE-2019-20019 affects Matio Project Matio. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-20019?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-20019 published?: CVE-2019-20019 was published on 2019-12-27 and last updated on 2026-06-17.

References

https://github.com/tbeu/matio/issues/130

Affected products (1)

cpe:2.3:a:matio_project:matio:1.5.17:*:*:*:*:*:*:*

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