CVE-1999-0766: Microsoft Java Virtual Machine

High severity, CVSS 9.3. EPSS: 7.2% chance of exploitation in the next 30 days.

The Microsoft Java Virtual Machine allows a malicious Java applet to execute arbitrary commands outside of the sandbox environment.

Affected products

• Microsoft Java Virtual Machine: any version

Published 1999-10-21. Last modified 2026-06-16.