CVE-2025-12674
📋 TL;DR
The KiotViet Sync WordPress plugin allows unauthenticated attackers to upload arbitrary files to affected servers due to missing file type validation. This vulnerability affects all versions up to 1.8.5 and can lead to remote code execution. Any WordPress site using this vulnerable plugin is at risk.
💻 Affected Systems
- KiotViet Sync 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
Complete server compromise via remote code execution, allowing attackers to install malware, steal data, deface websites, or use the server for further attacks.
Likely Case
Attackers upload web shells or malicious scripts to gain persistent access, deface websites, or install cryptocurrency miners.
If Mitigated
File uploads are blocked or properly validated, preventing malicious file execution while maintaining plugin functionality.
🎯 Exploit Status
Simple HTTP POST requests can exploit this vulnerability. No authentication required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.8.6 or later
Vendor Advisory: https://wordpress.org/plugins/kiotvietsync/
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find KiotViet Sync and click 'Update Now'. 4. Verify plugin version is 1.8.6 or higher.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily deactivate the KiotViet Sync plugin until patched
wp plugin deactivate kiotvietsync
Block Upload Endpoint
linuxUse web server configuration to block access to vulnerable endpoint
# Apache: <LocationMatch "\/wp-content\/plugins\/kiotvietsync\/.*">
Order deny,allow
Deny from all
</LocationMatch>
# Nginx: location ~* /wp-content/plugins/kiotvietsync/ { deny all; }
🧯 If You Can't Patch
- Disable the KiotViet Sync plugin immediately
- Implement web application firewall rules to block file uploads to the plugin directory
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Installed Plugins for KiotViet Sync versionCheck Version:
wp plugin get kiotvietsync --field=versionVerify Fix Applied:
Verify plugin version is 1.8.6 or higher in WordPress admin📡 Detection & Monitoring
Log Indicators:
- HTTP POST requests to /wp-content/plugins/kiotvietsync/ with file uploads
- Unauthorized file creation in wp-content/uploads/kiotvietsync/ directory
- PHP or executable files uploaded from unknown IPs
Network Indicators:
- Unusual POST requests to plugin endpoints from external IPs
- File uploads with suspicious extensions (.php, .exe, .sh) to plugin paths
SIEM Query:
source="web_server" AND (uri_path="/wp-content/plugins/kiotvietsync/" AND http_method="POST") AND (user_agent NOT CONTAINS "WordPress")