CVE-2019-13470: Matrixssl

Critical severity, CVSS 9.8. EPSS: 1.6% chance of exploitation in the next 30 days.

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

Affected products

• Matrixssl Matrixssl: before 4.2.1 (fixed in 4.2.1)

Published 2019-07-09. Last modified 2026-06-17.