CVE-2021-47891 — AI Deep Analysis Summary

Q: What is this vulnerability? (Essence + Consequences)

🚨 **Essence**: Unified Remote v3.9.0.2463 has a critical flaw in handling network packets. 💥 **Consequences**: Attackers can trigger **Remote Code Execution (RCE)**. Your device could be fully compromised.

Q: Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: **CWE-306** (Missing Access Control). 🔍 **Flaw**: The app fails to properly validate or restrict access when processing specific crafted network packets. It trusts input it shouldn't.

Q: Who is affected? (Versions/Components)

📱 **Affected Product**: Unified Remote (by Unified Intents AB). 📉 **Specific Version**: **3.9.0.2463**. ⚠️ **Scope**: Smartphone app acting as a wireless remote control.

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

👑 **Privileges**: Full **Remote Code Execution**. 📂 **Data Impact**: High confidentiality, integrity, and availability loss (CVSS H/H/H). Hackers can run arbitrary code, steal data, or crash the system.

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

⚡ **Threshold**: **LOW**. 🔓 **Auth/Config**: No authentication (PR:N) required. No user interaction (UI:N) needed. Network accessible (AV:N). It’s an open door for anyone on the network.

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

💣 **Public Exploit**: **YES**. 📂 **Source**: ExploitDB ID **49587** is available. 🌐 **Risk**: Wild exploitation is possible since PoC/Exploit code is public.

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

🔍 **Self-Check**: 1. Check your Unified Remote app version. 2. Is it exactly **3.9.0.2463**? 3. Scan for open ports associated with the remote service if exposed.

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

🩹 **Official Fix**: **YES**. 📥 **Action**: Visit the official download page to get the patched version. 🔗 **Link**: unifiedremote.com/download

Q: What if no patch? (Workaround)

🚧 **No Patch Workaround**: 1. **Disable** the remote service immediately. 2. **Isolate** the device from the network. 3. Uninstall the vulnerable version until updated.

Q: Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **CRITICAL**. ⏱️ **Priority**: Patch **IMMEDIATELY**. 📉 **Reason**: High CVSS score, no auth needed, and public exploits exist. Do not wait.

Updated May 06, 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**: Unified Remote v3.9.0.2463 has a critical flaw in handling network packets. <br>💥 **Consequences**: Attackers can trigger **Remote Code Execution (RCE)**. Your device could be fully compromised.

Q2Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: **CWE-306** (Missing Access Control). <br>🔍 **Flaw**: The app fails to properly validate or restrict access when processing specific crafted network packets. It trusts input it shouldn't.

Q3Who is affected? (Versions/Components)

📱 **Affected Product**: Unified Remote (by Unified Intents AB). <br>📉 **Specific Version**: **3.9.0.2463**. <br>⚠️ **Scope**: Smartphone app acting as a wireless remote control.

Q4What can hackers do? (Privileges/Data)

👑 **Privileges**: Full **Remote Code Execution**. <br>📂 **Data Impact**: High confidentiality, integrity, and availability loss (CVSS H/H/H). Hackers can run arbitrary code, steal data, or crash the system.

Q5Is exploitation threshold high? (Auth/Config)

⚡ **Threshold**: **LOW**. <br>🔓 **Auth/Config**: No authentication (PR:N) required. No user interaction (UI:N) needed. Network accessible (AV:N). It’s an open door for anyone on the network.

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

💣 **Public Exploit**: **YES**. <br>📂 **Source**: ExploitDB ID **49587** is available. <br>🌐 **Risk**: Wild exploitation is possible since PoC/Exploit code is public.

Q7How to self-check? (Features/Scanning)

🔍 **Self-Check**: <br>1. Check your Unified Remote app version. <br>2. Is it exactly **3.9.0.2463**? <br>3. Scan for open ports associated with the remote service if exposed.

Q8Is it fixed officially? (Patch/Mitigation)

🩹 **Official Fix**: **YES**. <br>📥 **Action**: Visit the official download page to get the patched version. <br>🔗 **Link**: unifiedremote.com/download

Q9What if no patch? (Workaround)

🚧 **No Patch Workaround**: <br>1. **Disable** the remote service immediately. <br>2. **Isolate** the device from the network. <br>3. Uninstall the vulnerable version until updated.

Q10Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **CRITICAL**. <br>⏱️ **Priority**: Patch **IMMEDIATELY**. <br>📉 **Reason**: High CVSS score, no auth needed, and public exploits exist. Do not wait.

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Vulnerability detail Full AI analysis (login) Unified Intents AB CWE-306