How severe is CVE-2017-3203?

This vulnerability has a severity rating of HIGH with a CVSS score of 8.1 out of 10.

What type of vulnerability is CVE-2017-3203?

This is classified as CWE-502, which is a common weakness in software security.

CVE-2017-3203 - HIGH Severity | CVSS 8.1

Vulnerability Description

The Java implementations of AMF3 deserializers in Pivotal/Spring Spring-flex 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.

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