CVE-2025-61817
📋 TL;DR
Adobe InCopy versions 20.5, 19.5.5 and earlier contain a use-after-free vulnerability that could allow attackers to execute arbitrary code when a user opens a malicious file. This affects users of InCopy on any operating system where these vulnerable versions are installed. 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 or malware execution within the user's context, potentially compromising sensitive documents and enabling lateral movement within the network.
If Mitigated
Limited impact with proper application sandboxing, restricted user privileges, and file execution policies preventing malicious file execution.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious file). No public exploit code available at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Update to InCopy 20.6 or later, or 19.5.6 or later
Vendor Advisory: https://helpx.adobe.com/security/products/incopy/apsb25-107.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 prevent opening untrusted InCopy files
Run with reduced privileges
allConfigure InCopy to run with standard user privileges instead of administrative rights
🧯 If You Can't Patch
- Implement application whitelisting to prevent execution of malicious code
- Use network segmentation to isolate InCopy systems from critical assets
🔍 How to Verify
Check if Vulnerable:
Check InCopy version via Help > About InCopy. If version is 20.5 or earlier, or 19.5.5 or earlier, system is vulnerable.Check Version:
Not applicable - check via application GUIVerify Fix Applied:
Verify version is 20.6 or later, or 19.5.6 or later via Help > About InCopy.📡 Detection & Monitoring
Log Indicators:
- Unexpected InCopy crashes
- Suspicious file opening events in application logs
- Unusual process creation from InCopy
Network Indicators:
- Outbound connections from InCopy to unknown IPs
- DNS requests for suspicious domains after file opening
SIEM Query:
source="incopy" AND (event_type="crash" OR file_path="*.incopy" AND user_interaction="open")