CVE-2025-54217
📋 TL;DR
CVE-2025-54217 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 full control of the victim's computer in the context of the current user's privileges.
Likely Case
Malicious code execution leading to data theft, ransomware deployment, or persistence establishment on the affected system.
If Mitigated
Limited impact if user awareness training prevents opening untrusted files and least privilege principles are followed.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious file) and reliable heap manipulation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Update to InCopy 20.5 or later, 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 malicious payloads
- Run InCopy with restricted user privileges to limit impact of successful exploitation
🔍 How to Verify
Check if Vulnerable:
Check InCopy version via Help > About InCopy. If version is 20.4 or earlier, or 19.5.4 or earlier, system is vulnerable.Check Version:
On Windows: Check via Help > About InCopy. On macOS: InCopy > About InCopy.Verify Fix Applied:
Verify version is 20.5 or later, or 19.5.5 or later after applying updates.📡 Detection & Monitoring
Log Indicators:
- Unexpected InCopy crashes
- Process creation from InCopy with unusual command lines
- File access to suspicious document formats
Network Indicators:
- Outbound connections from InCopy process to unknown IPs
- DNS requests for suspicious domains after file opening
SIEM Query:
process_name:"InCopy.exe" AND (event_type:process_creation OR event_type:crash)