CVE-2025-53299
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code via PHP object injection through deserialization of untrusted data in the ThemeMakers Visual Content Composer WordPress plugin. All WordPress sites using affected versions of this plugin are vulnerable to complete system compromise.
💻 Affected Systems
- ThemeMakers Visual Content Composer WordPress Plugin
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Full remote code execution leading to complete server takeover, data exfiltration, ransomware deployment, or website defacement.
Likely Case
Remote code execution allowing attackers to install backdoors, create admin users, or deploy malware on the WordPress site.
If Mitigated
Limited impact if proper web application firewalls and input validation are in place, though risk remains high due to the nature of deserialization vulnerabilities.
🎯 Exploit Status
Deserialization vulnerabilities are frequently weaponized and this CVE has a high CVSS score, making it attractive to attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.5.9 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'ThemeMakers Visual Content Composer'. 4. Click 'Update Now' if available. 5. Alternatively, download version 1.5.9+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate tmm_content_composer
Web Application Firewall Rule
allBlock suspicious serialized data patterns in requests
🧯 If You Can't Patch
- Immediately disable the ThemeMakers Visual Content Composer plugin
- Implement strict WAF rules to block PHP object injection patterns and monitor for exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Installed Plugins for 'ThemeMakers Visual Content Composer' versionCheck Version:
wp plugin get tmm_content_composer --field=versionVerify Fix Applied:
Verify plugin version is 1.5.9 or higher in WordPress admin📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests containing serialized data patterns
- Unexpected file creation in wp-content/uploads
- Suspicious PHP process execution
Network Indicators:
- HTTP requests with serialized PHP objects in parameters
- Traffic to known exploit servers
SIEM Query:
source="wordpress.log" AND "tmm_content_composer" AND ("unserialize" OR "O:" OR "C:")