CVE-2017-3207: Themidnightcoders Weborb For Java

Critical severity, CVSS 9.8. EPSS: 8.2% chance of exploitation in the next 30 days.

The Java implementations of AMF3 deserializers in WebORB for Java by Midnight Coders, version 5.1.1.0, derive class instances from java.io.Externalizable rather than the AMF3 specification's recommendation of flash.utils.IExternalizable. A remote attacker with the ability to spoof or control an RMI server connection may be able to send serialized Java objects that execute arbitrary code when deserialized.

Affected products

Published 2018-06-11. Last modified 2026-06-17.