On Tuesday, the U.S. Cybersecurity and Infrastructure Security Agency (CISA) escalated the threat landscape for enterprise web applications by adding four security flaws to its Known Exploited Vulnerabilities (KEV) catalog. Among these are critical issues affecting Adobe ColdFusion, Joomla, and Langflow. As defenders, we must prioritize CVE-2026-48282, a critical path traversal vulnerability in Adobe ColdFusion that carries a CVSS score of 10.0.
This is not a theoretical risk. CISA's inclusion in the KEV catalog confirms active exploitation in the wild. Given the history of ColdFusion being a prime target for ransomware operators (such as the TellYouThePass group), the window between disclosure and widespread weaponization has effectively closed.
Technical Analysis
Vulnerability: CVE-2026-48282 Affected Product: Adobe ColdFusion CVSS Score: 10.0 (Critical) Vulnerability Type: Path Traversal leading to Arbitrary Code Execution (RCE)
CVE-2026-48282 is a path traversal flaw that allows an unauthenticated attacker to bypass security restrictions. By manipulating file paths in requests to the web server, an attacker can traverse the directory structure outside the intended web root. In the context of ColdFusion, this often leads to reading sensitive configuration files or, more critically, writing arbitrary files. When combined with the architecture of ColdFusion, this can result in Remote Code Execution (RCE) under the context of the service account.
Exploitation Status: Confirmed Active Exploitation (CISA KEV).
The Attack Chain:
- Initial Access: Attacker sends a crafted HTTP request containing path traversal sequences (e.g.,
../or encoded variants) to a vulnerable ColdFusion endpoint. - Bypass: The application fails to properly sanitize the input, allowing access to files outside the web root.
- Execution: The attacker leverages this access to upload a webshell (CFM file) or modify configuration files to achieve system-level command execution.
Detection & Response
Given the active exploitation status, security teams must assume compromise and hunt for indicators of attack (IOA) rather than relying solely on IOCs.
Sigma Rules
The following Sigma rules detect the web attack vector and the subsequent process execution typical of ColdFusion exploitation.
---
title: Adobe ColdFusion Path Traversal Exploitation Attempt
id: a1b2c3d4-5678-90ab-cdef-1234567890ab
status: experimental
description: Detects potential path traversal exploitation attempts against Adobe ColdFusion endpoints via web logs.
references:
- https://cisa.gov/known-exploited-vulnerabilities-catalog
author: Security Arsenal
date: 2026/07/15
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
product: apache
# Note: Adjust logsource product based on environment (IIS/Nginx)
detection:
selection:
c-uri|contains:
- '.cfm'
- '.cfc'
cs-uri-query|contains:
- '../'
- '%2e%2e'
- '..\'
- 'path='
condition: selection
falsepositives:
- Legitimate developer testing or scanning
level: high
---
title: ColdFusion Service Spawning System Shell
id: b2c3d4e5-6789-01ab-cdef-234567890bc1
status: experimental
description: Detects the Adobe ColdFusion service spawning suspicious child processes (cmd, powershell, wmic), indicative of RCE.
references:
- https://attack.mitre.org/techniques/T1059/
author: Security Arsenal
date: 2026/07/15
tags:
- attack.execution
- attack.t1059.001
- attack.t1059.003
logsource:
category: process_creation
product: windows
detection:
selection:
ParentImage|endswith:
- '\coldfusion.exe'
- '\jrun.exe'
- '\jsvc.exe'
Image|endswith:
- '\cmd.exe'
- '\powershell.exe'
- '\pwsh.exe'
- '\wmic.exe'
- '\bash.exe'
condition: selection
falsepositives:
- Legitimate administrative tasks performed via CF admin interfaces
level: critical
KQL (Microsoft Sentinel / Defender)
Use this query to hunt for web requests exhibiting traversal patterns followed by unusual process activity on the host.
// Hunt for Path Traversal patterns in Web Logs (CEF/Syslog format)
Syslog
| where Facility in ("apache", "nginx", "iis")
| extend FilePath = extract(@'(GET|POST)\s+(.*?)\s+HTTP', 2, SyslogMessage)
| where FilePath has ".cfm" or FilePath has ".cfc"
| where SyslogMessage has "../" or SyslogMessage has "%2e%2e" or SyslogMessage has "..\\"
| project TimeGenerated, Computer, SourceIP, FilePath, SyslogMessage
| extend IoC = "PathTraversal"
;
// Correlate with Process Creation on the same host
union DeviceProcessEvents
| where Timestamp > ago(7d)
| where InitiatingProcessFileName has "coldfusion" or InitiatingProcessFileName has "jrun"
| where FileName in ("cmd.exe", "powershell.exe", "pwsh.exe", "bash.exe", "wmic.exe")
| project Timestamp, DeviceName, InitiatingProcessCommandLine, CommandLine, AccountName
Velociraptor VQL
This artifact hunts for running ColdFusion processes and checks for any child shell processes, indicating active exploitation.
-- Identify ColdFusion processes and check for suspicious child processes
SELECT Pid, Name, CommandLine, Exe, Username, Parent.Pid AS ParentPid
FROM pslist()
WHERE Name =~ 'coldfusion'
OR Name =~ 'jrun'
OR Name =~ 'jsvc'
-- Identify suspicious processes potentially spawned by ColdFusion
SELECT Pid, Name, CommandLine, Exe, Username, Parent.Pid AS ParentPid
FROM pslist()
WHERE Name IN ('cmd.exe', 'powershell.exe', 'pwsh.exe', 'bash.exe', 'sh')
AND Parent.Name =~ 'coldfusion'
Remediation Script (PowerShell)
This script checks for the presence of the Adobe ColdFusion service and flags it for immediate patching. It also attempts to identify the version.
# Audit Adobe ColdFusion Instances for CVE-2026-48282
Write-Host "[+] Scanning for Adobe ColdFusion services..." -ForegroundColor Cyan
$cfServices = Get-WmiObject -Class Win32_Service | Where-Object {
$_.Name -like "*ColdFusion*" -or
$_.DisplayName -like "*ColdFusion*" -or
$_.PathName -like "*coldfusion*"
}
if ($cfServices) {
foreach ($svc in $cfServices) {
Write-Host "[!] FOUND: $($svc.Name) - $($svc.DisplayName)" -ForegroundColor Red
Write-Host " State: $($svc.State)"
Write-Host " Path: $($svc.PathName)"
# Attempt to find version info in common path
$path = $svc.PathName -replace '"', '' -replace '.*?\\(.*?)\\.*', '$1'
Write-Host " ACTION REQUIRED: Apply patch for CVE-2026-48282 immediately."
}
} else {
Write-Host "[-] No Adobe ColdFusion services detected via WMI." -ForegroundColor Green
}
# Optional: Check for specific IOCs (example CFIDE access logs - requires log path input)
Write-Host "[+] Recommendation: Review IIS/Apache logs for URI patterns containing '../' targeting .cfm files."
Remediation
- Patch Immediately: Apply the latest security updates released by Adobe for ColdFusion. Due to the active exploitation status, patching should be treated as an emergency change.
- Network Segmentation: Ensure ColdFusion servers are not directly accessible from the internet. Place them behind a WAF or a reverse proxy with strict input validation.
- Restrict Access: Restrict access to sensitive directories such as
/CFIDE/and/gateway.cfcto trusted IP addresses only. - WAF Rules: Update Web Application Firewall rules to block path traversal attempts (e.g., sequences like
../,..\, and URL encoded variations like%2e%2e). - CISA Directive: Federal Civilian Executive Branch (FCEB) agencies must patch by the deadline mandated in CISA's Binding Operational Directive (BOD) 22-01. Private sector organizations are strongly urged to adhere to the same timeline.
Related Resources
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