CVE-2021-40792
📋 TL;DR
Adobe Premiere Pro versions 15.4.1 and earlier contain a memory corruption vulnerability when processing malicious files. This could allow attackers to execute arbitrary code with the privileges of the current user. Users who open untrusted Premiere Pro project files are at risk.
💻 Affected Systems
- Adobe Premiere Pro
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise via arbitrary code execution leading to data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Local privilege escalation leading to user account compromise, data exfiltration, or malware installation.
If Mitigated
Limited impact with proper application sandboxing and user privilege restrictions, potentially only application crash.
🎯 Exploit Status
Requires user to open a specially crafted malicious file. No public exploit code available as of knowledge cutoff.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 15.4.2 or later
Vendor Advisory: https://helpx.adobe.com/security/products/premiere_pro/apsb21-100.html
Restart Required: Yes
Instructions:
1. Open Adobe Creative Cloud desktop app. 2. Go to Apps tab. 3. Find Premiere Pro and click Update. 4. Restart Premiere Pro after update completes.
🔧 Temporary Workarounds
Restrict file opening
allConfigure Premiere Pro to only open trusted project files from known sources.
Application sandboxing
allRun Premiere Pro in restricted mode or sandbox to limit potential damage.
🧯 If You Can't Patch
- Implement application whitelisting to prevent execution of unauthorized code
- Restrict user privileges to standard user accounts (not administrator)
🔍 How to Verify
Check if Vulnerable:
Check Premiere Pro version via Help > About Premiere Pro. If version is 15.4.1 or earlier, system is vulnerable.Check Version:
On Windows: Check registry at HKEY_LOCAL_MACHINE\SOFTWARE\Adobe\Premiere Pro\15.0\Version. On macOS: Check /Applications/Adobe Premiere Pro 2021/Adobe Premiere Pro 2021.app/Contents/Info.plist CFBundleShortVersionStringVerify Fix Applied:
Verify version is 15.4.2 or later in Help > About Premiere Pro.📡 Detection & Monitoring
Log Indicators:
- Premiere Pro crash logs with memory access violations
- Unexpected child processes spawned from Premiere Pro
Network Indicators:
- Unusual outbound connections from Premiere Pro process
SIEM Query:
process_name:"Adobe Premiere Pro.exe" AND (event_type:crash OR parent_process_name:"Adobe Premiere Pro.exe")