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CVE-2023-38203

97
FAUCET Score

CVE-2023-38203 is a critical Deserialization of Untrusted Data vulnerability affecting Adobe ColdFusion versions 2018u17, 2021u7, and 2023u1 and earlier. This flaw allows for arbitrary code execution without user interaction, posing a severe risk to affected systems. With a CVSS score of 9.8 (CRITICAL) and an EPSS score indicating high exploitability, it has a FAUCET Risk Score of 100/100. The vulnerability is actively exploited, including in known ransomware campaigns, and has garnered significant community discussion and media coverage, with Nuclei templates available for detection.

Impacted Technologies

VendorProductVersion(s)CPE
2018CPE matchmatch criteria
cpe:2.3:a:adobe:coldfusion:2018:-:*:*:*:*:*:*
2018CPE matchmatch criteria
cpe:2.3:a:adobe:coldfusion:2018:update1:*:*:*:*:*:*
2018CPE matchmatch criteria
cpe:2.3:a:adobe:coldfusion:2018:update10:*:*:*:*:*:*
2018CPE matchmatch criteria
cpe:2.3:a:adobe:coldfusion:2018:update11:*:*:*:*:*:*
2018CPE matchmatch criteria
cpe:2.3:a:adobe:coldfusion:2018:update12:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
96.53%
Probability of exploitation in next 30 days
EPSS Percentile
99.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Added to KEV · Jan 8, 2024
Nuclei: CVE-2023-38203 · Jul 13, 2023
This CVE's current EPSS score of 0.9653 is in the 99th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

adobepatch availablevia nvd_reference
View patch

References

cisa.gov / known-exploited-vulnerabilities-catalog
Third Party AdvisoryUS Government Resource
helpx.adobe.com / security/products/coldfusion/apsb23-41.html
PatchVendor Advisory