CVE-2023-38203: Adobe ColdFusion Deserialization of Untrusted Data Vulnerability

Critical severity, CVSS 9.8. Actively exploited: in CISA KEV since 2024-01-08. EPSS: 97.1% chance of exploitation in the next 30 days.

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.

Affected products

• Adobe ColdFusion: version 2018 only; version 2021 only; version 2023 only

Published 2023-07-20. Last modified 2026-06-17.