CVE-2022-25061 — AI Deep Analysis Summary

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

🚨 **Essence**: Remote Command Injection in TP-LINK TL-WR840N. 💥 **Consequences**: Attackers can execute arbitrary OS commands, leading to **complete device compromise** and loss of control over the router.

Q: Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: The component `oal_setIp6DefaultRoute` lacks proper **input filtering and escaping**. ⚠️ **Flaw**: Unvalidated user input is passed directly to the system shell, allowing injection.

Q: Who is affected? (Versions/Components)

📦 **Affected Product**: TP-LINK TL-WR840N (Wireless Router). 🔢 **Specific Version**: TL-WR840N(ES) **V6.20 180709**. 🏢 **Vendor**: TP-LINK (China).

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

👑 **Privileges**: System-level access (Root/Admin). 📂 **Data Impact**: Full control of the device. Attackers can read/write files, install backdoors, or pivot to internal network.

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

🔑 **Auth Requirement**: **Authenticated**. ⚙️ **Config**: Attackers must have valid login credentials for the router interface to trigger the vulnerability.

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

💣 **Public Exp**: **Yes**. 🔗 **Resources**: - GitHub PoC: `exploitwritter/CVE-2022-25061` - Nuclei Template: `projectdiscovery/nuclei-templates`

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

🔍 **Self-Check**: 1. Verify router model & firmware version (V6.20 180709). 2. Use Nuclei scanner with CVE-2022-25061 template. 3. Check if `oal_setIp6DefaultRoute` endpoint is accessible.

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

🩹 **Official Fix**: The data does not explicitly confirm a patch release date. ⚠️ **Action**: Check TP-LINK official support site for firmware updates immediately.

Q: What if no patch? (Workaround)

🚧 **Workaround (No Patch)**: 1. **Change default passwords** to strong, complex ones. 2. Disable remote management if not needed. 3. Isolate the router from critical network segments.

Q: Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **HIGH**. 📉 **Priority**: Patch immediately. Since public exploits exist and it allows full RCE, unpatched routers are prime targets for botnets.

Updated May 08, 2026

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**: Remote Command Injection in TP-LINK TL-WR840N. <br>💥 **Consequences**: Attackers can execute arbitrary OS commands, leading to **complete device compromise** and loss of control over the router.

Q2Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: The component `oal_setIp6DefaultRoute` lacks proper **input filtering and escaping**. <br>⚠️ **Flaw**: Unvalidated user input is passed directly to the system shell, allowing injection.

Q3Who is affected? (Versions/Components)

📦 **Affected Product**: TP-LINK TL-WR840N (Wireless Router). <br>🔢 **Specific Version**: TL-WR840N(ES) **V6.20 180709**. <br>🏢 **Vendor**: TP-LINK (China).

Q4What can hackers do? (Privileges/Data)

👑 **Privileges**: System-level access (Root/Admin). <br>📂 **Data Impact**: Full control of the device. Attackers can read/write files, install backdoors, or pivot to internal network.

Q5Is exploitation threshold high? (Auth/Config)

🔑 **Auth Requirement**: **Authenticated**. <br>⚙️ **Config**: Attackers must have valid login credentials for the router interface to trigger the vulnerability.

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

💣 **Public Exp**: **Yes**. <br>🔗 **Resources**: <br>- GitHub PoC: `exploitwritter/CVE-2022-25061` <br>- Nuclei Template: `projectdiscovery/nuclei-templates`

Q7How to self-check? (Features/Scanning)

🔍 **Self-Check**: <br>1. Verify router model & firmware version (V6.20 180709). <br>2. Use Nuclei scanner with CVE-2022-25061 template. <br>3. Check if `oal_setIp6DefaultRoute` endpoint is accessible.

Q8Is it fixed officially? (Patch/Mitigation)

🩹 **Official Fix**: The data does not explicitly confirm a patch release date. <br>⚠️ **Action**: Check TP-LINK official support site for firmware updates immediately.

Q9What if no patch? (Workaround)

🚧 **Workaround (No Patch)**: <br>1. **Change default passwords** to strong, complex ones. <br>2. Disable remote management if not needed. <br>3. Isolate the router from critical network segments.

Q10Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **HIGH**. <br>📉 **Priority**: Patch immediately. Since public exploits exist and it allows full RCE, unpatched routers are prime targets for botnets.

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