CVE-2025-21127
📋 TL;DR
This CVE describes an uncontrolled search path element vulnerability in Adobe Photoshop Desktop that could allow arbitrary code execution. Attackers could manipulate environment variables to load malicious libraries when Photoshop launches. Affected users include anyone running vulnerable Photoshop versions 25.12, 26.1 and earlier.
💻 Affected Systems
- Adobe Photoshop Desktop
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining the same privileges as the Photoshop user, potentially leading to data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Local privilege escalation or malware execution in the context of the Photoshop user account, allowing attackers to access sensitive files or install additional payloads.
If Mitigated
Limited impact with proper application whitelisting and user privilege restrictions, potentially only affecting user-specific files and settings.
🎯 Exploit Status
Exploitation requires social engineering or local access to modify environment variables, plus user interaction to launch Photoshop.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Update to Photoshop 25.13 or 26.2 or later
Vendor Advisory: https://helpx.adobe.com/security/products/photoshop/apsb25-02.html
Restart Required: No
Instructions:
1. Open Adobe Creative Cloud application. 2. Navigate to Apps tab. 3. Find Photoshop and click Update. 4. Alternatively, download latest version from Adobe website.
🔧 Temporary Workarounds
Restrict PATH environment variable modifications
allPrevent users or processes from modifying PATH environment variables that Photoshop uses
Windows: Use Group Policy to restrict environment variable modifications
macOS: Use configuration profiles to lock environment variables
Application control/whitelisting
allImplement application control to prevent unauthorized DLL/library loading
Windows: Configure AppLocker or Windows Defender Application Control
macOS: Use Gatekeeper and System Integrity Protection
🧯 If You Can't Patch
- Implement least privilege - Run Photoshop with standard user accounts, not administrator privileges
- Monitor for suspicious environment variable modifications and unauthorized library loading attempts
🔍 How to Verify
Check if Vulnerable:
Check Photoshop version via Help > About Photoshop or Creative Cloud appCheck Version:
Windows: Get-ItemProperty 'HKLM:\SOFTWARE\Adobe\Photoshop\*' | Select-Object Version | macOS: /Applications/Adobe\ Photoshop\ */Adobe\ Photoshop.app/Contents/Info.plist | grep -A1 CFBundleShortVersionStringVerify Fix Applied:
Verify Photoshop version is 25.13 or higher for v25, or 26.2 or higher for v26📡 Detection & Monitoring
Log Indicators:
- Unusual DLL/library loading from non-standard paths
- Process creation events for Photoshop with modified environment variables
- Failed library loading attempts from unexpected locations
Network Indicators:
- Outbound connections from Photoshop process to suspicious domains post-launch
SIEM Query:
process_name:"photoshop.exe" AND (event_type:"process_creation" AND env_vars_modified:true) OR (event_type:"dll_load" AND file_path NOT CONTAINS "Program Files\\Adobe\\Photoshop")