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Vulnerability Database/CVE-2026-106615

CVE-2026-106615: ColdFusion Auth Bypass Vulnerability

CVE-2026-106615 is an authentication bypass flaw in Adobe ColdFusion that enables low-privileged attackers to execute arbitrary code. This post covers technical details, affected versions, security impact, and mitigation strategies.

Published:

CVE-2026-106615 Overview

Adobe ColdFusion contains an Incorrect Authorization vulnerability [CWE-863] that enables arbitrary code execution in the context of the current user. A low-privileged attacker with local access can exploit this flaw without any user interaction. The vulnerability has a changed scope, meaning successful exploitation impacts resources beyond the vulnerable component itself.

Critical Impact

An authenticated attacker with low privileges can execute arbitrary code and compromise confidentiality, integrity, and availability of resources outside the ColdFusion security boundary.

Affected Products

  • Adobe ColdFusion (see the Adobe ColdFusion Security Advisory for affected versions)
  • ColdFusion deployments on supported operating systems
  • Applications relying on ColdFusion runtime services

Discovery Timeline

  • 2026-10-13 - CVE-2026-106615 published to NVD
  • 2026-10-14 - Last updated in NVD database

Technical Details for CVE-2026-106615

Vulnerability Analysis

The flaw stems from an authorization check failure within ColdFusion. The product performs an authorization decision but does not correctly enforce it, allowing a low-privileged local actor to perform actions reserved for higher-privileged users. Successful exploitation yields arbitrary code execution in the context of the current user.

Because the CVSS scope is changed, the vulnerable component and the impacted component differ. An attacker who gains code execution through ColdFusion can affect assets managed by a separate security authority on the host, broadening the blast radius of a single compromise.

Root Cause

The root cause is classified under [CWE-863] Incorrect Authorization. ColdFusion authorizes an action using logic that does not accurately reflect the privilege model it intends to enforce. The flaw permits execution paths that should be restricted to privileged roles, resulting in code execution capability for low-privileged accounts.

Attack Vector

The attack requires local access and low privileges, with no user interaction. An attacker with an existing foothold on a ColdFusion host, such as a limited application account or a compromised service identity, can invoke the vulnerable code path to execute arbitrary commands. Adobe has not released public exploit details. Refer to the Adobe ColdFusion Security Advisory for vendor-provided technical details.

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Detection Methods for CVE-2026-106615

Indicators of Compromise

  • Unexpected child processes spawned by the ColdFusion service account (cfusion or JVM processes launching shells, cmd.exe, powershell.exe, or interpreters)
  • New or modified .cfm, .cfc, or .jsp files in webroots or ColdFusion application directories outside normal deployment windows
  • Outbound network connections initiated by the ColdFusion runtime to unfamiliar hosts
  • ColdFusion administrator or scheduled task entries created by low-privileged accounts

Detection Strategies

  • Baseline ColdFusion process behavior and alert on deviations such as command interpreter spawns or script downloads
  • Monitor ColdFusion application and audit logs for authorization-related anomalies and administrative actions performed by non-admin principals
  • Correlate file integrity changes in ColdFusion directories with process execution telemetry

Monitoring Recommendations

  • Forward ColdFusion server logs, Windows or Linux process telemetry, and web server access logs to a centralized SIEM
  • Enable detailed audit logging in the ColdFusion Administrator and alert on privilege-related configuration changes
  • Review scheduled tasks, event gateways, and custom tag registrations on a recurring basis for unauthorized entries

How to Mitigate CVE-2026-106615

Immediate Actions Required

  • Apply the Adobe security updates referenced in APSB26-144 on all ColdFusion instances
  • Inventory ColdFusion deployments, including development and staging servers, to ensure complete patch coverage
  • Rotate credentials for ColdFusion service accounts and administrator users following patching

Patch Information

Adobe published fixed ColdFusion builds in the APSB26-144 security bulletin. Administrators should consult the advisory for exact fixed version numbers and apply updates following Adobe's recommended upgrade procedure.

Workarounds

  • Restrict local access to ColdFusion servers to a minimal set of trusted administrators
  • Run the ColdFusion service under a least-privileged account and limit file system and registry permissions
  • Lock down the ColdFusion Administrator interface to management networks only
  • Remove unused ColdFusion components, example applications, and deprecated endpoints to reduce attack surface
bash
# Example: restrict ColdFusion service account privileges on Linux
sudo chown -R cfuser:cfgroup /opt/coldfusion/cfusion
sudo chmod -R 750 /opt/coldfusion/cfusion
sudo iptables -A INPUT -p tcp --dport 8500 -s 10.0.0.0/24 -j ACCEPT
sudo iptables -A INPUT -p tcp --dport 8500 -j DROP

Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.

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