CVE-2017-3202
The implementation of Action Message Format (AMF3) deserializers in Flamingo amf-serializer by Exadel, version 2.2.0, may allow instantiation of arbitrary classes due to improper code control
- 9.8CriticalCVSS base score
- 8.1%Exploitation in 30 daysEPSS · top 5.2% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
The Java implementation of AMF3 deserializers used in Flamingo amf-serializer by Exadel, version 2.2.0, may allow instantiation of arbitrary classes via their public parameter-less constructor and subsequently call arbitrary Java Beans setter methods. The ability to exploit this vulnerability depends on the availability of classes in the class path that make use of deserialization. A remote attacker with the ability to spoof or control information may be able to send serialized Java objects with pre-set properties that result in arbitrary code execution when deserialized.
Timeline
ID reserved
By certcc
- 18 months later
· 18 months later
Published
- 6 years later
· 6 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
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 (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
Exadel · Flamingo amf-serializer
- affected 2.2.0
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavencom.exadel.flamingo.flex:amf-serializerGHSA-j88v-q3vw-p9vr (opens in a new tab)
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
- 97380 (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)
- EUVD EUVD-2022-4311 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-j88v-q3vw-p9vr (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2017-3202)Record last updated .