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Vulnerability record · CVE-2017-3207 · published 11 June 2018

CVE-2017-3207: Themidnightcoders weborb for java deserialization of untrusted data vulnerability

TThemidnightcoders · Weborb For Java

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.

9.8 CVSS 3.0 Critical EPSS 8.2% · top 5.3% CWE-502 · Deserialization of untrusted data
9.8CVSS 3.0 base score, v2 7.5
8.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/97384 Third Party AdvisoryVDB Entry
http://www.securityweek.com/flaws-java-amf-libraries-allow-remote-code-execution Third Party Advisory
https://codewhitesec.blogspot.com/2017/04/amf.html ExploitThird Party Advisory
https://www.kb.cert.org/vuls/id/307983 Third Party AdvisoryUS Government Resource
http://www.securityfocus.com/bid/97384 Third Party AdvisoryVDB Entry
http://www.securityweek.com/flaws-java-amf-libraries-allow-remote-code-execution Third Party Advisory
https://codewhitesec.blogspot.com/2017/04/amf.html ExploitThird Party Advisory
https://www.kb.cert.org/vuls/id/307983 Third Party AdvisoryUS Government Resource

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2017-3207), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.