CVE-2019-10914: Matrixssl

Critical severity, CVSS 9.8. EPSS: 1.4% chance of exploitation in the next 30 days.

pubRsaDecryptSignedElementExt in MatrixSSL 4.0.1 Open, as used in Inside Secure TLS Toolkit, has a stack-based buffer overflow during X.509 certificate verification because of missing validation in psRsaDecryptPubExt in crypto/pubkey/rsa_pub.c.

Affected products

• Matrixssl Matrixssl: up to and including 4.0.2

Published 2019-04-08. Last modified 2026-06-17.