What is CVE-2019-13470?

CVE-2019-13470 is a critical-severity vulnerability in Matrixssl, classified under Out-of-bounds Read. CVSS score: 9.8/10. Published 2019-07-09.

How severe is CVE-2019-13470?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Out-of-bounds Read in Matrixssl

CVE-2019-13470

MatrixSSL before 4.2.1 has an out-of-bounds read during ASN.1 handling.

Vulnerability class: Buffer Overflow

Published 2019-07-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.016 (75.3th percentile), scored 2026-10-07.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Matrixssl

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

github.com/matrixssl/matrixssl/blob/4-2-1-open/doc/CHANGES_v4.x.md (Third Party Advisory)

Frequently asked questions

What is CVE-2019-13470?: CVE-2019-13470 is a critical-severity vulnerability in Matrixssl, classified under Out-of-bounds Read. CVSS score: 9.8/10. Published 2019-07-09.
How severe is CVE-2019-13470?: Critical severity. CVSS v3 base score is 9.8 out of 10.