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CVE-2017-3207
WebORB for Java by Midnight Coders, version 5.1.1.0, Action Message Format (AMF3) Java implementation is vulnerable to insecure deserialization
Critical9.8EPSS 8.1%
- Published
- Updated
- Reserved
- Assigned by
- certcc
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Critical9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 8.1% · top 5.2% of all CVEs (2 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
Affected products
Midnight Coders · WebORB for Java
- affected 5.1.1.0
References (4)
- https://codewhitesec.blogspot.com/2017/04/amf.html (opens in a new tab)x_refsource_MISCx_transferred
- VU#307983 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
- http://www.securityweek.com/flaws-java-amf-libraries-allow-remote-code-execution (opens in a new tab)x_refsource_MISCx_transferred
- 97384 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Record last updated .