CVE-2026-106619 Overview
Adobe ColdFusion contains an improper input validation vulnerability [CWE-20] that enables arbitrary code execution in the context of the current user. The flaw is reachable over the network without authentication and without user interaction. Successful exploitation changes scope, meaning the attacker can impact resources beyond the vulnerable component. Exploit success depends on conditions outside the attacker's control, which raises attack complexity but does not eliminate risk. Adobe published guidance in security bulletin APSB26-144. The vulnerability was published to the National Vulnerability Database on October 13, 2026.
Critical Impact
Remote attackers can execute arbitrary code on vulnerable ColdFusion servers without authentication, enabling full application compromise and potential lateral movement.
Affected Products
- Adobe ColdFusion (versions enumerated in Adobe advisory APSB26-144)
- ColdFusion application servers exposed to untrusted network input
- Downstream applications hosted on affected ColdFusion runtimes
Discovery Timeline
- 2026-10-13 - CVE-2026-106619 published to the National Vulnerability Database
- 2026-10-14 - Last updated in NVD database
Technical Details for CVE-2026-106619
Vulnerability Analysis
The vulnerability stems from improper input validation within ColdFusion request handling. ColdFusion fails to adequately validate attacker-controlled input before passing it to code paths that influence execution. An attacker who reaches the exposed endpoint can submit crafted input that triggers arbitrary code execution in the context of the current user running the ColdFusion process.
Because scope is marked as changed, code executed through this flaw can affect components beyond the ColdFusion application itself. On typical deployments, this means access to the underlying host, adjacent application data, and potentially connected database systems. The attack vector is network-based and requires no authentication or user interaction, lowering the operational bar for exploitation.
Adobe notes that exploit success depends on conditions outside the attacker's control. These conditions likely involve server configuration, request timing, or environment-specific state. Defenders should not treat this conditional dependency as mitigation. Adobe addressed the issue in the APSB26-144 security update.
Root Cause
The root cause is improper validation of input [CWE-20] processed by ColdFusion server-side components. Trusted downstream logic consumes attacker-supplied data without sufficient sanitization, enabling the attacker to influence execution flow.
Attack Vector
An unauthenticated attacker sends crafted requests to a network-exposed ColdFusion instance. The request payload bypasses input validation and reaches a sink that enables arbitrary code execution under the ColdFusion service account. No user interaction is required.
No verified public proof-of-concept exploit is referenced in the advisory. See the Adobe ColdFusion Security Update for technical details.
Stop Remote Code Execution Before It Runs
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Stop Exploit AttemptsDetection Methods for CVE-2026-106619
Indicators of Compromise
- Unexpected cfml, cfm, or cfc file writes under the ColdFusion web root or wwwroot directories
- Child processes spawned by the ColdFusion Java process (coldfusion.exe or jrun.exe) such as cmd.exe, powershell.exe, or /bin/sh
- Outbound network connections from the ColdFusion service account to unfamiliar hosts
- Anomalous POST requests to administrative or component invocation endpoints with large or encoded payloads
Detection Strategies
- Inspect ColdFusion access and application logs for malformed requests targeting component (/CFIDE/, /flex2gateway/, or /cfusion/) endpoints
- Correlate web request telemetry with process creation events on the ColdFusion host to surface execution chains
- Alert on new scheduled tasks, services, or persistence artifacts created by the ColdFusion service account
Monitoring Recommendations
- Enable verbose request logging on ColdFusion servers and forward logs to a centralized analytics platform
- Baseline normal ColdFusion process behavior and alert on deviations such as script interpreter launches or file system writes outside expected paths
- Monitor outbound egress from application servers for unexpected destinations consistent with command-and-control activity
How to Mitigate CVE-2026-106619
Immediate Actions Required
- Apply the Adobe security update referenced in APSB26-144 to all ColdFusion instances
- Inventory internet-facing ColdFusion deployments and prioritize patching for externally reachable servers
- Restrict network access to ColdFusion administrative and component endpoints using firewall or reverse proxy rules
- Review ColdFusion service account privileges and reduce permissions to the minimum required
Patch Information
Adobe released fixed ColdFusion builds in bulletin APSB26-144. Administrators should consult the Adobe ColdFusion Security Update for exact affected versions, patched build numbers, and installation instructions. Apply updates during the next available maintenance window and verify the patched version post-deployment.
Workarounds
- Place ColdFusion behind a web application firewall configured to filter malformed requests to component and administrative endpoints
- Block external access to /CFIDE/administrator/, /CFIDE/adminapi/, and other sensitive paths at the perimeter
- Run ColdFusion as a low-privileged user and isolate the service with host-based firewall rules to limit lateral movement
- Disable unused ColdFusion features and components to reduce the attack surface until patches are applied
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
