# CVE-2017-3066: Adobe ColdFusion Deserialization

> Attackers can execute arbitrary code on Adobe ColdFusion servers via a Java deserialization flaw in the Apache BlazeDS library.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Yes, since 24 Feb 2025 (CISA KEV)
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 Apr 2017
- **Updated:** 21 Oct 2025
- **Also known as:** GHSA-7cc9-8vjg-gpp8

## What is CVE-2017-3066?

CVE-2017-3066 is a critical unsafe deserialization vulnerability in Adobe Coldfusion, published on 27 Apr 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2017-3066?

It affects 1 product.


Products: Adobe Coldfusion.

## How do I fix CVE-2017-3066?

No fix has been published for CVE-2017-3066 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 17 Mar 2025.

## Is CVE-2017-3066 being exploited?

Yes. Attackers have exploited CVE-2017-3066 in the wild since at least 24 Feb 2025.

Public exploit code:

- Exploitation Tool for CVE-2017-3066 targeting Adobe Coldfusion 11/12 (github_poc): https://github.com/codewhitesec/ColdFusionPwn
- The study of vulnerability CVE-2017-3066. Java deserialization (github_poc): https://github.com/cucadili/CVE-2017-3066
- Adobe Coldfusion 11.0.03.292866 - BlazeDS Java Object Deserialization Remote Code Execution (exploitdb)

## Other vulnerabilities in Adobe Coldfusion

- [CVE-2026-48282](https://insights.sbomify.com/CVE-2026-48282/): Adobe ColdFusion Path Traversal (critical 10.0, exploited in the wild)
- [CVE-2023-38203](https://insights.sbomify.com/CVE-2023-38203/): Adobe ColdFusion Deserialization of Untrusted Data (critical 9.8, exploited in the wild)
- [CVE-2023-29300](https://insights.sbomify.com/CVE-2023-29300/): Adobe ColdFusion Deserialization of Untrusted Data (critical 9.8, exploited in the wild)
- [CVE-2023-26359](https://insights.sbomify.com/CVE-2023-26359/): Adobe ColdFusion Deserialization of Untrusted Data (critical 9.8, exploited in the wild)
- [CVE-2018-15961](https://insights.sbomify.com/CVE-2018-15961/): Adobe ColdFusion Unrestricted File Upload (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-3066 and fix it if it is affected.

What it is: CVE-2017-3066 is a critical unsafe deserialization vulnerability in Adobe Coldfusion, published on 27 Apr 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: Yes. Attackers have exploited CVE-2017-3066 in the wild since at least 24 Feb 2025.

Affected product: Adobe Coldfusion. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2017-3066/ (Markdown: https://insights.sbomify.com/CVE-2017-3066/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-3066
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-3066
- OSV: https://osv.dev/vulnerability/CVE-2017-3066

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-3066/
Summaries are generated and may contain mistakes; the official description above is the record.