CVE-2024-27198 — AI Deep Analysis Summary

Updated May 07, 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**: Critical Auth Bypass in JetBrains TeamCity. 📉 **Consequences**: Attackers gain full control. Complete compromise of CI/CD pipelines. RCE possible. 💥 **Impact**: High (CVSS 9.8).

Q2Root Cause? (CWE/Flaw)

🔍 **Root Cause**: CWE-288. 🛑 **Flaw**: Authentication Bypass Using an Alternate Path. 🔓 **Mechanism**: Flawed logic allows skipping standard login checks via specific API endpoints.

Q3Who is affected? (Versions/Components)

🏢 **Vendor**: JetBrains. 📦 **Product**: TeamCity. 📅 **Affected**: Versions **before 2023.11.4**. 🌐 **Scope**: All pre-patch installations exposed to the internet.

Q4What can hackers do? (Privileges/Data)

👑 **Privileges**: System Administrator. 🛠️ **Actions**: Create rogue admin accounts. Execute remote commands (RCE). 💾 **Data**: Full access to build artifacts & source code.

Q5Is exploitation threshold high? (Auth/Config)

⚡ **Threshold**: LOW. 🔑 **Auth**: None required (PR:N). 🌍 **Access**: Network accessible (AV:N). 🖱️ **UI**: No user interaction needed. 🎯 **Ease**: Automated exploitation available.

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

🔥 **Exploits**: YES. Multiple PoCs on GitHub. 🚀 **Wild Exploitation**: Active mass exploitation reported. 📢 **Sources**: Rapid7, DarkReading confirm widespread attacks.

Q7How to self-check? (Features/Scanning)

🔎 **Scan**: Use Fofa/Shodan (`app="JET_BRAINS-TeamCity"`). 🧪 **Test**: Run provided Python PoC scripts. 📋 **Check**: Verify version < 2023.11.4. 🚩 **Sign**: Look for unauthorized admin users.

Q8Is it fixed officially? (Patch/Mitigation)

✅ **Fixed**: YES. 📥 **Patch**: Upgrade to **TeamCity 2023.11.4** or later. 📢 **Source**: Official JetBrains security page. 🛡️ **Action**: Mandatory update.

Q9What if no patch? (Workaround)

🚧 **No Patch?**: Block port 8111 externally. 🚫 **Restrict**: IP whitelisting only. 🔒 **Monitor**: Alert on admin account creation. 🛑 **Isolate**: Disconnect from internet if possible.

Q10Is it urgent? (Priority Suggestion)

🔴 **Priority**: CRITICAL. 🚨 **Urgency**: IMMEDIATE. ⏳ **Risk**: Active exploitation in the wild. 🏃 **Action**: Patch NOW. Do not wait.

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Vulnerability detail Full AI analysis (login) JetBrains CWE-288