{"id":"CVE-2017-3203","aliases":[],"url":"https://o3.security/vulnerability/CVE-2017-3203","summary":"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…","details":"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.","published":"2018-06-11T17:29:00.680","modified":"2026-06-17T01:17:43.690","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[],"fix":null,"references":[{"type":"ADVISORY","url":"http://www.securityweek.com/flaws-java-amf-libraries-allow-remote-code-execution"},{"type":"EXPLOIT","url":"https://codewhitesec.blogspot.com/2017/04/amf.html"},{"type":"ADVISORY","url":"https://www.kb.cert.org/vuls/id/307983"},{"type":"ADVISORY","url":"https://www.securityfocus.com/bid/97376"},{"type":"ADVISORY","url":"http://www.securityweek.com/flaws-java-amf-libraries-allow-remote-code-execution"},{"type":"EXPLOIT","url":"https://codewhitesec.blogspot.com/2017/04/amf.html"},{"type":"ADVISORY","url":"https://www.kb.cert.org/vuls/id/307983"},{"type":"ADVISORY","url":"https://www.securityfocus.com/bid/97376"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-06-17T01:17:43.690"}}