What is CVE-2023-38204?

CVE-2023-38204 is a critical-severity vulnerability in Adobe Coldfusion, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2023-09-14.

How severe is CVE-2023-38204?

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

Is CVE-2023-38204 known to be exploited?

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

Deserialization in Adobe Coldfusion

CVE-2023-38204

Adobe ColdFusion versions 2018u18 (and earlier), 2021u8 (and earlier) and 2023u2 (and earlier) are affected by a Deserialization of Untrusted Data vulnerability that could result in Arbitrary code execution. Exploitation of this issue does not require user interaction.

Vulnerability class: Insecure Deserialization

Published 2023-09-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.669 (99.3th percentile), scored 2026-10-18.

High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.662 · newest: 0.669 · change: +0.007

Affected products

Adobe Coldfusion — versions 2023, 2018, 0

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

Public proof-of-concept exploits

References

helpx.adobe.com/security/products/coldfusion/apsb23-47.html (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2023-38204?: CVE-2023-38204 is a critical-severity vulnerability in Adobe Coldfusion, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2023-09-14.
How severe is CVE-2023-38204?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2023-38204 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.