CVE-2026-48316 -- CVSS 10.0 Vulnerability Briefing
CVE-2026-48316 | CVSS 10.0 (Critical) | Exploit: No known exploit
What Is It
CVE-2026-48316 is a critical improper input validation vulnerability in Adobe ColdFusion versions 2025.9, 2023.20, and earlier, affecting the application server platform used to build and serve web applications.
Technical Detail
The flaw stems from insufficient validation of user-supplied input within the ColdFusion runtime, allowing an attacker to supply malformed or malicious data that the application processes without adequate sanitization or boundary enforcement. Successful exploitation results in arbitrary code execution in the context of the current user running the ColdFusion service, which in many default deployments operates with elevated system privileges. The CVSS score of 10.0 indicates the vulnerability is remotely exploitable, requires no authentication, and carries no complexity barriers to exploitation under the scoring model applied.
Exploitation Status
No known exploit code has been publicly identified at this time, and the vulnerability is not currently listed in the CISA Known Exploited Vulnerabilities catalog. The exploit maturity is assessed as none, meaning no public proof-of-concept or operational exploit has been confirmed as of July 13, 2026. However, the maximum CVSS score and the nature of the flaw make this a high-priority target for threat actors who routinely reverse-engineer Adobe security patches.
Who Is Targeting This
No specific threat actor attribution at this time. Neither confirmed nor reported threat actor associations have been identified in connection with this vulnerability. ColdFusion has historically been targeted by financially motivated actors and state-sponsored groups, but no such activity has been linked to CVE-2026-48316 as of this writing.
What To Do
Organizations running Adobe ColdFusion should treat this as an urgent patching priority given the critical severity rating and the potential for unauthenticated remote code execution. Apply Adobe's official patches to bring ColdFusion 2025 to a version above 2025.9 and ColdFusion 2023 to a version above 2023.20 as soon as they are available or confirmed available from Adobe. If immediate patching is not feasible, restrict external network access to ColdFusion administrative interfaces and enforce allowlist-based input filtering at the web application firewall layer. Monitor ColdFusion server logs for anomalous process spawning, unexpected outbound connections, and unusual file writes, which are common indicators of post-exploitation activity on this platform. Verify that ColdFusion services are not running under SYSTEM or root-level accounts to limit the blast radius of any successful exploitation.