CVE Record
[ CRITICAL ]CVE-2023-38203
Adobe ColdFusion Deserialization of Untrusted Data Vulnerability
Adobe ColdFusion contains a deserialization of untrusted data vulnerability that allows for code execution.
- Vendor
- Adobe
- Product
- ColdFusion
- CVSS
- 9.8
- EPSS (exploit probability)
- 97.1%
- Status
- kevransomware use
- CISA patch-by (BOD 22-01)
- Added to KEV
Is CVE-2023-38203 being exploited?
Yes. CISA added CVE-2023-38203 to its Known Exploited Vulnerabilities catalog on . CISA only lists a CVE when it has reliable evidence of exploitation in the wild. CISA marks it as known to be used in ransomware campaigns.
FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 97.1% (scored October 14, 2026).
- CISA KEV[ LISTED ]
- ENISA EUVD (exploited)[ — ]
- CIRCL KEV[ — ]
Catalog snapshot 2026-10-19. Full cross-catalog view: /kev-comparison
What to do
CISA required actionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
US federal civilian agencies must remediate by (21 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.
Other Adobe ColdFusion CVEs we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV |
|---|---|---|---|---|
| CVE-2026-48325 Adobe ColdFusion missing authentication — CVSS 9.3write-up | [ CRITICAL ] | 9.3 | 0.6% | — |
| CVE-2026-48322 Adobe ColdFusion code injection — CVSS 9.6write-up | [ CRITICAL ] | 9.6 | 1.2% | — |
| CVE-2026-48321 Adobe ColdFusion authorization bypass — CVSS 9.3write-up | [ CRITICAL ] | 9.3 | 0.4% | — |
| CVE-2026-48319 Adobe ColdFusion path traversal — CVSS 9.1write-up | [ CRITICAL ] | 9.1 | 1.4% | — |
| CVE-2026-48284 Adobe ColdFusion input-validation failure — CVSS 9.6write-up | [ CRITICAL ] | 9.6 | 0.5% | — |
| CVE-2026-48318 Adobe ColdFusion path traversalwrite-up | [ CRITICAL ] | 9.9 | 1.1% | — |
| CVE-2026-48282 Adobe ColdFusion path-traversal to arbitrary code executionwrite-up | [ CRITICAL ] | 10.0 | 42.4% | |
| CVE-2017-3066 Adobe ColdFusion Deserialization Vulnerability | [ CRITICAL ] | 9.8 | 90.6% |