CVE-2025-8420
📋 TL;DR
The Request a Quote Form WordPress plugin versions ≤2.5.2 contain a remote code execution vulnerability that allows unauthenticated attackers to execute arbitrary PHP functions on the server. This occurs because the plugin doesn't properly validate user input before using it as a function name. WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- Request a Quote Form 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 allowing attackers to install backdoors, steal data, deface websites, or pivot to other systems.
Likely Case
Website defacement, data theft, cryptocurrency mining, or installation of persistent backdoors.
If Mitigated
Limited impact due to function parameter restrictions, but still allows execution of dangerous PHP functions.
🎯 Exploit Status
Exploitation is straightforward but limited to calling functions without parameters.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.5.3
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Request a Quote Form' and update to version 2.5.3 or later. 4. If update not available, deactivate and delete the plugin.
🔧 Temporary Workarounds
Disable vulnerable plugin
allDeactivate the Request a Quote Form plugin to prevent exploitation
wp plugin deactivate request-a-quote-form
Web Application Firewall rule
allBlock requests containing emd_form_builder_lite_pagenum parameter
🧯 If You Can't Patch
- Deactivate and remove the Request a Quote Form plugin immediately
- Implement strict WAF rules to block exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Request a Quote Form version. If version ≤2.5.2, you are vulnerable.Check Version:
wp plugin get request-a-quote-form --field=versionVerify Fix Applied:
Verify plugin version is 2.5.3 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- HTTP requests containing 'emd_form_builder_lite_pagenum' parameter with suspicious function names
- Unusual PHP function calls in web server logs
Network Indicators:
- POST requests to WordPress endpoints with emd_form_builder_lite_pagenum parameter
SIEM Query:
source="web_logs" AND "emd_form_builder_lite_pagenum"