How severe is CVE-2017-3066?

CVE-2017-3066 has a CVSS score of 9.8/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by CVE-2017-3066?

Affected package information for CVE-2017-3066 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2017-3066?

No fixed version has been published for CVE-2017-3066 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2017-3066 actively exploited in the wild?

Yes. There are 9 known exploit references for CVE-2017-3066, including 1 documented proof-of-concept exploit on Exploit-DB and 6 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2017-3066?

CVE-2017-3066 has an EPSS (Exploit Prediction Scoring System) score of 93.7%, placing it in the 100th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Is CVE-2017-3066 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2017-3066 (Adobe ColdFusion Deserialization Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2025-02-24. CISA required all US federal civilian agencies to remediate this vulnerability by 2025-03-17. The required action was: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2017-3066?

CVE-2017-3066 is classified as Deserialization of Untrusted Data (CWE-502). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

Which products and versions are affected by CVE-2017-3066?

CVE-2017-3066 affects adobe coldfusion (3 versions, e.g. 10.0, 11.0, 2016). Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2017-3066 published, and has it been updated?

CVE-2017-3066 was published on April 27, 2017 and was last updated on April 22, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2025-02-24 — agencies required to remediate by 2025-03-17

CVE-2017-3066

CRITICAL

Adobe ColdFusion 2016 Update 3 and earlier, ColdFusion 11 update 11 and earlier, ColdFusion 10 Update 22 and earlier have a Java deserialization vulnerability in the Apache BlazeDS…

Published

Apr 27, 2017

Updated

Apr 22, 2026

Affected

0 pkgs

Patched

None yet

Exploits

9 known

EPSS Exploitation Probability

via FIRST.org ↗

93.7%probability of exploitation in next 30 days

Very High Risk100th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

Adobe ColdFusion 2016 Update 3 and earlier, ColdFusion 11 update 11 and earlier, ColdFusion 10 Update 22 and earlier have a Java deserialization vulnerability in the Apache BlazeDS library. Successful exploitation could lead to arbitrary code execution.

Affected Products

1 product · 39 configurations

Application

coldfusionadobe

3 versions

10.011.02016

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-43993remotewindows

Adobe Coldfusion 11.0.03.292866 - BlazeDS Java Object Deserialization Remote Code Execution

by Faisal Tameesh · Feb 7, 2018

Exploit-DB Source

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2017-3066 in your stack?

O3 detects CVE-2017-3066 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my stack How O3 SCA works

CVSS Score

9.8/10

CVSS v3 base score

Vector breakdown

AV:Attack Vector

Network

AC:Attack Complexity

Low

PR:Privileges Required

None

UI:User Interaction

None

S:Scope

Unchanged

C:Confidentiality

High

I:Integrity

High

A:Availability

High

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE Classification

CWE-502Deserialization of Untrusted Data

Weaponization

No known public exploit tooling found.

Timeline

Disclosed

Apr 27, 2017

First exploit

Feb 7, 2018

KEV added

Feb 24, 2025

Last updated

Apr 22, 2026

Identifiers

CVE-2017-3066

References

Advisorysecurityfocus.com Advisorysecuritytracker.com Advisorysecurityfocus.com Advisorysecuritytracker.com Fixhelpx.adobe.com Fixhelpx.adobe.com Exploit / PoCexploit-db.com Exploit / PoCexploit-db.com Webcisa.gov

Data from OSV.dev, enriched by O3 Security. Refreshed hourly.