External risk intelligence

Adobe ColdFusion Code Execution Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 10.0)

CVE-2026-47928

An Improper Input Validation vulnerability in Adobe ColdFusion allows unauthenticated attackers to execute arbitrary code on the server. This could lead to system compromise and unauthorized access to resources if the vulnerable application is reachable.

4Halo Surface Signal

Adobe Coldfusion

20232025

External exposure likelihood

Halo Surface Signal score for CVE-2026-47928

Adobe ColdFusion is a commercial application server platform commonly deployed to host public-facing web applications and APIs, making it a frequent component of internet-exposed web infrastructure.

PCI scan relevance

PCI Relevance for CVE-2026-47928

Yes

CVE-2026-47928 — Halo PCI Relevance: Yes. Under typical PCI ASV external scan criteria, this issue may be flagged for scan prioritization.

This vulnerability in ColdFusion could allow arbitrary code execution, which would cause a PCI ASV scan to fail.

Scan-prioritization guidance only—not a PCI DSS certification or ASV attestation.

Horizon Alert

Summary of the vulnerability and why it matters

A critical vulnerability has been identified in Adobe ColdFusion, an application server platform. This issue, if exploited, could allow for the execution of arbitrary code, potentially impacting the security and integrity of systems that rely on this technology. The primary concern is to confirm whether our environment utilizes this specific software.

  • Code could be run on affected systems.
  • Confirms relevance and exposure of ColdFusion.
  • Assess if ColdFusion is in our environment.

Attack Path

How an attacker could exploit the issue

An attacker could exploit this vulnerability by sending specially crafted input to an exposed Adobe ColdFusion application. This could lead to the execution of arbitrary code with the privileges of the running application.

  • Attacker can reach without authentication.
  • Vulnerable component accepts malicious input.
  • Arbitrary code execution.

Live Threat

Current exploitation, exposure, and threat context

An Improper Input Validation vulnerability in Adobe ColdFusion could allow an unauthenticated attacker to execute arbitrary code on the server. This could occur when an attacker sends specially crafted input to an affected ColdFusion application, potentially leading to the compromise of the server's resources and data.

  • Server code execution and system compromise.
  • Malicious input sent over the network.
  • Unauthorized access to server resources.

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

Application owners or infrastructure teams are likely responsible for addressing this vulnerability in Adobe ColdFusion. The first practical step is to identify all instances of ColdFusion within your environment, confirm their exposure and criticality, and then assign ownership to the accountable team for remediation planning.

  • Identify all ColdFusion deployments.
  • Verify exposure and business criticality.
  • Plan remediation with accountable owners.

Frequently asked questions

What is Adobe ColdFusion?

Adobe ColdFusion is a commercial application server platform used to build and deploy dynamic websites and web services. It provides a specialized environment where server-side scripts process data and interact with databases to deliver content to users, making it a common foundation for enterprise web applications.

What does CWE-20 mean for CVE-2026-47928?

CWE-20 refers to Improper Input Validation. In this context, it means the software does not correctly verify or sanitize the data provided by a user before processing it. This failure allows an attacker to supply malicious input that the server inadvertently executes, leading to arbitrary code execution instead of performing its intended function.

How is this vulnerability triggered?

An attacker triggers this vulnerability by sending specially crafted network requests to an affected ColdFusion application. Because the software fails to validate these inputs, it processes the malicious content as valid instructions. No user interaction or authentication is required for this to occur.

Why should I care about this for my infrastructure?

Halo Surface Signal identifies ColdFusion as a platform typically deployed to host public-facing web applications. Because this vulnerability allows for remote, unauthenticated access, any ColdFusion instance that is internet-facing carries a significantly higher risk compared to those strictly isolated within an internal network.

What is the first step to address this?

Your priority is to perform a comprehensive inventory of your environment to locate all Adobe ColdFusion installations. Once you identify which servers are running the affected versions, assess their network exposure and business impact to prioritize them for update planning.

References