CVE-2026-21330
📋 TL;DR
Adobe After Effects versions 25.6 and earlier contain a type confusion vulnerability that could allow arbitrary code execution when a user opens a malicious file. This affects users running vulnerable versions of After Effects on any supported operating system. Attackers could exploit this to run malicious code with the victim's privileges.
💻 Affected Systems
- Adobe After Effects
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining the same privileges as the logged-in user, potentially leading to data theft, ransomware deployment, or lateral movement.
Likely Case
Local code execution leading to malware installation, data exfiltration, or persistence mechanisms being established on the affected system.
If Mitigated
No impact if users avoid opening untrusted After Effects files and have proper endpoint protection.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious file) and knowledge of file format manipulation. No public exploits known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 25.7 or later
Vendor Advisory: https://helpx.adobe.com/security/products/after_effects/apsb26-15.html
Restart Required: Yes
Instructions:
1. Open Adobe Creative Cloud application. 2. Navigate to 'Apps' section. 3. Find After Effects and click 'Update'. 4. Restart After Effects after update completes.
🔧 Temporary Workarounds
Restrict file opening
allConfigure application control to block opening of After Effects files from untrusted sources
Sandbox execution
allRun After Effects in isolated environment or virtual machine when opening untrusted files
🧯 If You Can't Patch
- Implement application whitelisting to block execution of malicious payloads
- Educate users to never open After Effects files from untrusted sources
🔍 How to Verify
Check if Vulnerable:
Check After Effects version via Help > About After Effects. If version is 25.6 or earlier, system is vulnerable.Check Version:
On Windows: Check registry at HKEY_LOCAL_MACHINE\SOFTWARE\Adobe\After Effects\[version]\ProductVersion. On macOS: Check /Applications/Adobe After Effects [version]/Adobe After Effects.app/Contents/Info.plist CFBundleShortVersionStringVerify Fix Applied:
Verify After Effects version is 25.7 or later via Help > About After Effects.📡 Detection & Monitoring
Log Indicators:
- Unexpected After Effects crashes
- Suspicious child processes spawned from After Effects
- Unusual file access patterns from After Effects process
Network Indicators:
- Outbound connections from After Effects process to suspicious domains
- DNS requests for known malicious domains from After Effects
SIEM Query:
process_name:"AfterFX.exe" AND (event_type:process_creation OR event_type:crash)