CVE-2016-15042 — AI Deep Analysis Summary

Q: Who is affected? (Versions/Components)

📦 **Vendor**: nmedia. 📉 **Affected Products**: 1. Frontend File Manager (`nmedia-user-file-uploader`) **< v4.0**. 2. N-Media Post Front-end Form (`wp-post-frontend`) **< v1.1**.

Q: What can hackers do? (Privileges/Data)

👑 **Privileges**: Unauthenticated access required. 📂 **Data**: Full server access. Hackers can execute arbitrary code, modify site files, steal database credentials, and take over the entire WordPress instance.

Q: Is exploitation threshold high? (Auth/Config)

📉 **Threshold**: **LOW**. 🚫 **Auth**: No authentication needed (Unauthenticated). 📝 **Config**: Default installation is vulnerable. Easy to exploit via standard HTTP POST requests.

Q: Is there a public Exp? (PoC/Wild Exploitation)

🔓 **Public Exp?**: **YES**. 📂 **PoC**: Multiple Dockerized labs exist (e.g., `ImBIOS/lab-cve-2016-15042`). 🤖 **Scanners**: Nuclei templates (`CVE-2016-15042.yaml`) are available for automated detection.

Q: How to self-check? (Features/Scanning)

🔍 **Self-Check**: 1. Scan for plugin versions < 4.0 / < 1.1. 2. Use Nuclei with the specific CVE template. 3. Check if file upload endpoints lack MIME/extension validation.

Q: Is it fixed officially? (Patch/Mitigation)

🛠️ **Fix**: **YES**. Official patches released. - Update Frontend File Manager to **v4.0+**. - Update N-Media Post Front-end Form to **v1.1+**.

Q: What if no patch? (Workaround)

🚧 **No Patch?**: 1. **Disable** the vulnerable plugins immediately. 2. Implement WAF rules to block `.php` uploads to upload directories. 3. Restrict upload folder permissions (no execute bit).

Q: Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **CRITICAL**. 🚨 **Priority**: **P0**. Unauthenticated RCE is a top-tier threat. Patch immediately or disable plugins to prevent immediate takeover.

Updated May 08, 2026 CVSS 9.8 · Critical

This is a summary of the AI-generated 10-question deep analysis. The full version (longer answers, follow-up Q&A, related CVEs) requires login. Read the full analysis →

Q1What is this vulnerability? (Essence + Consequences)

🚨 **Essence**: Arbitrary File Upload via missing validation. 💥 **Consequences**: Attackers upload malicious files (e.g., webshells) to the server.…

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Q2Root Cause? (CWE/Flaw)

🛡️ **CWE**: CWE-434 (Unrestricted Upload of File with Dangerous Type). 🔍 **Flaw**: The functions `nm_filemanager_upload_file` and `nm_postfron` fail to validate file types.…

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Q3Who is affected? (Versions/Components)

📦 **Vendor**: nmedia. 📉 **Affected Products**: 
1. Frontend File Manager (`nmedia-user-file-uploader`) **< v4.0**.
2. N-Media Post Front-end Form (`wp-post-frontend`) **< v1.1**.

Q4What can hackers do? (Privileges/Data)

👑 **Privileges**: Unauthenticated access required. 📂 **Data**: Full server access. Hackers can execute arbitrary code, modify site files, steal database credentials, and take over the entire WordPress instance.

Q5Is exploitation threshold high? (Auth/Config)

📉 **Threshold**: **LOW**. 🚫 **Auth**: No authentication needed (Unauthenticated). 📝 **Config**: Default installation is vulnerable. Easy to exploit via standard HTTP POST requests.

Q6Is there a public Exp? (PoC/Wild Exploitation)

🔓 **Public Exp?**: **YES**. 📂 **PoC**: Multiple Dockerized labs exist (e.g., `ImBIOS/lab-cve-2016-15042`). 🤖 **Scanners**: Nuclei templates (`CVE-2016-15042.yaml`) are available for automated detection.

Q7How to self-check? (Features/Scanning)

🔍 **Self-Check**: 
Scan for plugin versions < 4.0 / < 1.1.
Use Nuclei with the specific CVE template.
Check if file upload endpoints lack MIME/extension validation.

Q8Is it fixed officially? (Patch/Mitigation)

🛠️ **Fix**: **YES**. Official patches released. 
- Update Frontend File Manager to **v4.0+**.
- Update N-Media Post Front-end Form to **v1.1+**.

Q9What if no patch? (Workaround)

🚧 **No Patch?**: 
**Disable** the vulnerable plugins immediately.
Implement WAF rules to block `.php` uploads to upload directories.
Restrict upload folder permissions (no execute bit).

Q10Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **CRITICAL**. 🚨 **Priority**: **P0**. Unauthenticated RCE is a top-tier threat. Patch immediately or disable plugins to prevent immediate takeover.

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Vulnerability detail Full AI analysis (login) nmedia CWE-434