On 2024-01-08, CISA added CVE-2023-38203 (Adobe ColdFusion) to its Known Exploited Vulnerabilities (KEV) catalog [2]. The vulnerability is listed in the catalog as "Adobe ColdFusion Deserialization of Untrusted Data Vulnerability" [2]. CISA requires remediation in accordance with the listed vendor mitigation guidance; see the original text in the body for specific requirements [2].
Backfill: this event became public on Jan 8, 2024 and we added it on Nov 10, 2026. It is not a new event.
CISA Adds Adobe ColdFusion Vulnerability CVE-2023-38203 to Known Exploited Vulnerabilities Catalog
1 min read
- Disclosed
- Jan 8, 2024
- Published
- Nov 10, 2026
- Last updated
- Nov 8, 2026
- CVSS basis
- Our assessment
- 97.1%, higher than 100% of CVEs
- Exploitation and patch status
- ExploitedKEV
- Attack vector
- Vulnerability status
- Actor type
- Motivation
On this page
30-second summary
What happened
Who is affected
Industries mainly affected: Government, Cross-industry
What to do nowOur advice
CISA requires remediation in accordance with the listed vendor mitigation guidance; see the original text in the body for specific requirements [2].
Timeline
Technical details
CISA KEV Listing Record
CISA added CVE-2023-38203 (Adobe ColdFusion) to the Known Exploited Vulnerabilities () catalog on 2024-01-08 [2].
Original Technical Description
Adobe ColdFusion contains a deserialization of untrusted data vulnerability that allows for code execution. [2]
Official Required Action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. [2]
Individual Vulnerability Record
The U.S. National Vulnerability Database (NVD) provides an independent vulnerability record and description for CVE-2023-38203 [1].
References
Official / primary3
- [1]
“Adobe ColdFusion versions 2018u17 (and earlier), 2021u7 (and earlier) and 2023u1 (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.”
- [2]
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