CVSS v3
8.1
HIGH
EPSS Score
13.4%
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
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.
Active exploitation of CVE-2017-3203 has not been confirmed. The EPSS score is 13.4%, indicating the estimated probability of exploitation in the next 30 days.
CVE-2017-3203 has a CVSS v3 base score of 8.1 (HIGH severity).
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Ranked by exploit probability (EPSS).