CVE-2025-54219
📋 TL;DR
CVE-2025-54219 is a heap-based buffer overflow vulnerability in Adobe InCopy that could allow arbitrary code execution when a user opens a malicious file. This affects users of InCopy versions 20.4, 19.5.4 and earlier. Successful exploitation requires user interaction through opening a specially crafted file.
💻 Affected Systems
- Adobe InCopy
📦 What is this software?
Incopy by Adobe
Incopy by Adobe
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining the same privileges as the current user, potentially leading to data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Local privilege escalation leading to unauthorized access to sensitive documents and system resources accessible to the user account.
If Mitigated
Limited impact with proper application sandboxing and user privilege restrictions, potentially contained to the InCopy process only.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious file) and heap manipulation knowledge. No public exploits known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Update to InCopy version 20.5 or 19.5.5 or later
Vendor Advisory: https://helpx.adobe.com/security/products/incopy/apsb25-80.html
Restart Required: Yes
Instructions:
1. Open Adobe InCopy. 2. Go to Help > Check for Updates. 3. Follow prompts to install available updates. 4. Restart InCopy after installation completes.
🔧 Temporary Workarounds
Restrict file opening
allConfigure application control policies to restrict opening of untrusted InCopy files
User awareness training
allTrain users to only open InCopy files from trusted sources
🧯 If You Can't Patch
- Implement application whitelisting to block execution of vulnerable InCopy versions
- Run InCopy with reduced user privileges and in sandboxed environments
🔍 How to Verify
Check if Vulnerable:
Check InCopy version via Help > About InCopy. If version is 20.4, 19.5.4 or earlier, system is vulnerable.Check Version:
On Windows: Check registry at HKEY_LOCAL_MACHINE\SOFTWARE\Adobe\InCopy\XX.0\Registration\ProductVersion. On macOS: Check /Applications/Adobe InCopy XX/Adobe InCopy.app/Contents/Info.plistVerify Fix Applied:
Verify InCopy version is 20.5 or 19.5.5 or later via Help > About InCopy.📡 Detection & Monitoring
Log Indicators:
- Unexpected InCopy crashes
- Large file processing errors
- Suspicious child processes spawned from InCopy
Network Indicators:
- Unusual outbound connections from InCopy process
- DNS requests to suspicious domains after file opening
SIEM Query:
Process Creation where (Image contains 'incopy.exe' OR ParentImage contains 'incopy.exe') AND CommandLine contains suspicious patterns