What is CVE-2017-3202?

CVE-2017-3202 is a critical-severity vulnerability in Exadel Flamingo, classified under Improper Control of Dynamically-Managed Code Resources. CVSS score: 9.8/10. Published 2018-06-11.

How severe is CVE-2017-3202?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2017-3202 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Deserialization in Exadel Flamingo

CVE-2017-3202

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.

Published 2018-06-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.082 (94.7th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.082 · newest: 0.082 · change: 0.000

Affected products

Exadel Flamingo — versions 2.2.0
Exadel Flamingo Amf-Serializer — versions 2.2.0

Weakness classification (CWE)

Public proof-of-concept exploits

PalindromeLabs/Java-Deserialization-CVEs

References

codewhitesec.blogspot.com/2017/04/amf.html (Exploit, Third Party Advisory)
www.kb.cert.org/vuls/id/307983 (US Government Resource, Third Party Advisory, third-party-advisory)
www.securityweek.com/flaws-java-amf-libraries-allow-remote-code-execution (Third Party Advisory)
www.securityfocus.com/bid/97380 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2017-3202?: CVE-2017-3202 is a critical-severity vulnerability in Exadel Flamingo, classified under Improper Control of Dynamically-Managed Code Resources. CVSS score: 9.8/10. Published 2018-06-11.
How severe is CVE-2017-3202?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2017-3202 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.