CVE-2025-49113 — AI Deep Analysis Summary

Q: Who is affected? (Versions/Components)

📦 **Affected Versions**: • Roundcube Webmail **< 1.5.10** (LTS) • Roundcube Webmail **< 1.6.11** (Current) 🏢 **Vendor**: Roundcube Team.

Q: Is it urgent? (Priority Suggestion)

🚨 **Urgency**: **CRITICAL / IMMEDIATE**. • CVSS 10.0. • Public PoCs and Scanners exist. • Flaw has existed for **10+ years**. 👉 **Priority**: **P1**. Patch or mitigate within **24-48 hours**.

Updated May 06, 2026 CVSS 9.9 · 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**: Critical PHP Object Deserialization flaw in Roundcube Webmail. <br>🔥 **Consequences**: Allows Remote Code Execution (RCE).…

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Q2Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: **CWE-502** (Deserialization of Untrusted Data). <br>❌ **Flaw**: The `_from` parameter in `program/actions/settings/upload.php` is **not validated**.…

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Q3Who is affected? (Versions/Components)

📦 **Affected Versions**: <br>• Roundcube Webmail **< 1.5.10** (LTS) <br>• Roundcube Webmail **< 1.6.11** (Current) <br>🏢 **Vendor**: Roundcube Team.

Q4What can hackers do? (Privileges/Data)

💀 **Attacker Capabilities**: <br>• **RCE**: Execute arbitrary code on the server. <br>• **Privileges**: Gain full system access (since it runs as the web user).…

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Q5Is exploitation threshold high? (Auth/Config)

🔓 **Exploitation Threshold**: <br>• **Auth Required**: **YES**. Must be an **authenticated user**. <br>• **UI Required**: **NO**. No user interaction needed beyond login. <br>• **Network**: Remote (AV:N).…

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

💣 **Public Exploits**: <br>• **PoC Available**: **YES**. Multiple GitHub repos (e.g., `rasool13x/exploit-CVE-2025-49113`).…

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Q7How to self-check? (Features/Scanning)

🔍 **Self-Check Methods**: <br>1. **Version Check**: Look for `rcversion` in HTML body. <br>2. **Scanner**: Use Nuclei with CVE-2025-49113 template. <br>3.…

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Q8Is it fixed officially? (Patch/Mitigation)

✅ **Official Fix**: <br>• **Patch Available**: **YES**. <br>• **Fixed Versions**: Roundcube **1.5.10** and **1.6.11**. <br>📥 **Action**: Upgrade immediately to these versions or later.…

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Q9What if no patch? (Workaround)

🚧 **No Patch Workaround**: <br>1. **Restrict Access**: Block access to `program/actions/settings/upload.php` via WAF or Web Server config. <br>2.…

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Q10Is it urgent? (Priority Suggestion)

🚨 **Urgency**: **CRITICAL / IMMEDIATE**. <br>• CVSS 10.0. <br>• Public PoCs and Scanners exist. <br>• Flaw has existed for **10+ years**. <br>👉 **Priority**: **P1**. Patch or mitigate within **24-48 hours**.

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Vulnerability detail Full AI analysis (login) Roundcube CWE-502