CVE-2026-48283 is a critical vulnerability in Adobe ColdFusion that allows unrestricted upload of files with dangerous types (CWE-434). Affected versions include 2025.9, 2023.20, and earlier. Exploitation does not require user interaction and can lead to arbitrary code execution in the context of the current user, affecting system confidentiality, integrity, and availability. The vulnerability has a CVSS 3.1 base score of 10. No official fix or vendor advisory detailing remediation is currently available.

Successful exploitation can result in arbitrary code execution with the privileges of the ColdFusion process user, potentially leading to full system compromise. The vulnerability affects confidentiality, integrity, and availability of the affected systems. No known exploits in the wild have been reported at this time.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, organizations should consider restricting file upload functionality, applying strict file type validation, and monitoring for suspicious activity related to file uploads in ColdFusion environments.