CVE-2025-27300 – This vulnerability in the giuliopanda ADFO Word... (How to Fix)

📋 TL;DR

This vulnerability in the giuliopanda ADFO WordPress plugin allows attackers to inject malicious objects through deserialization of untrusted data. It affects all WordPress sites running ADFO plugin versions up to 1.9.1. Successful exploitation could lead to remote code execution or other malicious activities.

💻 Affected Systems

Products:

giuliopanda ADFO WordPress plugin

Versions: All versions up to and including 1.9.1

Operating Systems: Any OS running WordPress

Default Config Vulnerable: ⚠️ Yes

Notes: All WordPress installations with vulnerable plugin versions are affected regardless of configuration

⚠️ 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.

Recommended Actions:

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

Remote code execution leading to complete system compromise, data theft, or ransomware deployment

🟠

Likely Case

Unauthorized access to sensitive data, privilege escalation, or website defacement

🟢

If Mitigated

Limited impact with proper input validation and security controls in place

🌐 Internet-Facing: HIGH - WordPress plugins are typically internet-facing and accessible to attackers

🏢 Internal Only: MEDIUM - Internal systems could be compromised through lateral movement

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ✅ No

Complexity: MEDIUM

Requires understanding of PHP object injection and WordPress plugin structure

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Version after 1.9.1

Vendor Advisory: https://patchstack.com/database/wordpress/plugin/admin-form/vulnerability/wordpress-adfo-plugin-1-9-1-deserialization-of-untrusted-data-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel
2. Navigate to Plugins → Installed Plugins
3. Find ADFO plugin
4. Click 'Update Now' if available
5. If no update available, deactivate and remove the plugin

🔧 Temporary Workarounds

Disable ADFO plugin

WordPress

Temporarily disable the vulnerable plugin until patched

wp plugin deactivate adfo

🧯 If You Can't Patch

Implement web application firewall (WAF) rules to block deserialization attempts
Restrict access to WordPress admin interface using IP whitelisting

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel → Plugins → Installed Plugins for ADFO version ≤1.9.1

Check Version:

wp plugin get adfo --field=version

Verify Fix Applied:

Confirm ADFO plugin version is greater than 1.9.1 or plugin is removed

📡 Detection & Monitoring

Log Indicators:

Unusual POST requests to WordPress admin-ajax.php or plugin endpoints
PHP errors related to unserialize() or object injection

Network Indicators:

HTTP requests with serialized data payloads to plugin endpoints

SIEM Query:

source="wordpress.log" AND ("unserialize" OR "adfo" OR "admin-form") AND status=200

📊 Metadata

CVE ID: CVE-2025-27300

CVSS v3 Score: 7.2 (HIGH)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CWE: CWE-502

EPSS Score: 0.22% exploit probability (44.4th percentile)

Published: February 24, 2025

Last Updated: February 24, 2025

🔗 References

https://patchstack.com/database/wordpress/plugin/admin-form/vulnerability/wordpress-adfo-plugin-1-9-1-deserialization-of-untrusted-data-vulnerability?_s_id=cve

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