CVE-2017-2781: Matrixssl

Critical severity, CVSS 9.8. EPSS: 2.3% chance of exploitation in the next 30 days.

An exploitable heap buffer overflow vulnerability exists in the X509 certificate parsing functionality of InsideSecure MatrixSSL 3.8.7b. A specially crafted x509 certificate can cause a buffer overflow on the heap resulting in remote code execution. To trigger this vulnerability, a specially crafted x509 certificate must be presented to the vulnerable client or server application when initiating secure connection.

Affected products

• Matrixssl Matrixssl: version 3.8.7b only

Published 2017-06-22. Last modified 2026-06-17.