CVE-2025-54261: Adobe ColdFusion Path Traversal Flaw

CVE-2025-54261 Overview

CVE-2025-54261 is a critical Path Traversal vulnerability affecting Adobe ColdFusion that can lead to arbitrary code execution. This vulnerability exists in ColdFusion versions 2025.3, 2023.15, 2021.21 and earlier releases. The flaw is classified as CWE-22 (Improper Limitation of a Pathname to a Restricted Directory) and requires certain optional configurations to be enabled for exploitation.

The vulnerability is particularly dangerous because it allows remote attackers to escape restricted directories and execute arbitrary code on the underlying server. The scope change designation indicates that successful exploitation can impact resources beyond the vulnerable component itself, potentially compromising the entire hosting environment.

Critical Impact

Unauthenticated attackers can achieve arbitrary code execution on vulnerable ColdFusion servers with optional configurations enabled, potentially leading to complete system compromise with scope change affecting additional resources.

Affected Products

• Adobe ColdFusion 2025 (version 2025.3 and earlier, including updates 1-3)
• Adobe ColdFusion 2023 (version 2023.15 and earlier, including updates 1-15)
• Adobe ColdFusion 2021 (version 2021.21 and earlier, including updates 1-21)

Discovery Timeline

• September 9, 2025 - CVE-2025-54261 published to NVD
• October 3, 2025 - Last updated in NVD database

Technical Details for CVE-2025-54261

Vulnerability Analysis

This Path Traversal vulnerability in Adobe ColdFusion allows attackers to manipulate file path parameters to access files and directories outside the intended restricted directory structure. When combined with the ability to write or upload malicious content, this leads directly to arbitrary code execution on the server.

The vulnerability requires certain optional configurations to be enabled in ColdFusion, which may include features related to file handling, template processing, or administrative interfaces. When these configurations are active, the application fails to properly sanitize user-supplied path input, allowing directory traversal sequences to reach sensitive areas of the file system.

The scope change designation (S:C in CVSS) is particularly significant as it indicates that successful exploitation can impact resources beyond the vulnerable ColdFusion application itself. This could include other applications on the same server, underlying operating system resources, or network-accessible systems that trust the compromised server.

Root Cause

The root cause of CVE-2025-54261 is improper input validation when processing file path parameters. The ColdFusion application fails to adequately sanitize or restrict path traversal sequences such as ../ or ..\ in user-controlled input. This allows attackers to escape the intended directory sandbox and access arbitrary locations on the file system.

When optional configurations are enabled that extend file handling capabilities, the insufficient path validation becomes exploitable for code execution. The vulnerability likely exists in components that process template paths, file uploads, or administrative file operations where path manipulation can lead to writing executable content.

Attack Vector

The attack is network-based and requires no authentication or user interaction, making it highly exploitable. An attacker can remotely target vulnerable ColdFusion servers by:

1. Identifying a ColdFusion server with the vulnerable optional configurations enabled
2. Crafting malicious HTTP requests containing path traversal sequences
3. Exploiting the path traversal to access or write files outside restricted directories
4. Leveraging file system access to achieve arbitrary code execution

The path traversal vulnerability can be exploited by including directory traversal sequences in parameters that are processed as file paths. When the server processes these malicious paths without proper sanitization, attackers can read sensitive configuration files, overwrite critical system files, or upload web shells for persistent access.

Detection Methods for CVE-2025-54261

Indicators of Compromise

• HTTP requests to ColdFusion endpoints containing path traversal sequences (../, ..\, ..%2f, ..%5c) in URL parameters or POST data
• Unexpected file access or modifications in directories outside the ColdFusion webroot
• New or modified .cfm, .cfc, or other executable files in unusual locations
• ColdFusion process spawning unexpected child processes or executing system commands

Detection Strategies

• Deploy web application firewall (WAF) rules to detect and block path traversal patterns in HTTP requests targeting ColdFusion applications
• Monitor ColdFusion server logs for requests containing encoded or unencoded directory traversal sequences
• Implement file integrity monitoring (FIM) on critical ColdFusion directories and the broader web server file system
• Configure intrusion detection systems (IDS) with signatures for ColdFusion path traversal exploitation attempts

Monitoring Recommendations

• Enable verbose logging for ColdFusion file operations and monitor for access to files outside expected directories
• Set up alerts for any new executable file creation in the ColdFusion installation directory and webroot
• Monitor network traffic for command and control (C2) communications originating from ColdFusion servers
• Review ColdFusion configuration audit logs for unauthorized changes to optional settings

How to Mitigate CVE-2025-54261

Immediate Actions Required

• Apply the latest Adobe ColdFusion security update as referenced in security bulletin APSB25-93 immediately
• Review ColdFusion configurations and disable any optional features not strictly required for business operations
• Restrict network access to ColdFusion administrative interfaces using firewall rules or VPN requirements
• Implement WAF rules to block path traversal patterns while awaiting patch deployment

Patch Information

Adobe has released security updates to address this vulnerability as documented in Adobe ColdFusion Security Advisory APSB25-93. Organizations should apply the appropriate update for their ColdFusion version:

• ColdFusion 2025: Update to a version newer than 2025.3
• ColdFusion 2023: Update to a version newer than 2023.15
• ColdFusion 2021: Update to a version newer than 2021.21

Review the official Adobe security bulletin for specific patch versions and installation instructions.

Workarounds

• Disable optional ColdFusion configurations that may expose the path traversal vulnerability until patches can be applied
• Place ColdFusion servers behind a reverse proxy or WAF configured to sanitize path traversal attempts
• Implement strict file system permissions to limit the ColdFusion service account's access to only required directories
• Consider temporarily restricting external network access to ColdFusion servers if they are not business-critical

# Example: Restrict ColdFusion directory permissions (Linux)
# Limit ColdFusion service account to specific directories
chown -R coldfusion:coldfusion /opt/coldfusion/cfusion
chmod -R 750 /opt/coldfusion/cfusion
# Remove write permissions from template directories where not required
chmod -R 550 /opt/coldfusion/cfusion/wwwroot