CVE-2026-4312 — AI Deep Analysis Summary

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

🚨 **Essence**: Critical Access Control Error in DrangSoft GCB/FCB Audit Software. 📉 **Consequences**: Attackers can bypass authentication to create **new admin accounts**, leading to total system compromise. 💥

Q: Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: **CWE-306** (Missing Authentication for Critical Function). ❌ **Flaw**: The software fails to verify identity before allowing API calls for account creation. 🔓

Q: Who is affected? (Versions/Components)

🏢 **Affected Vendor**: DrangSoft. 💻 **Product**: GCB/FCB Audit Software (Chinese financial audit tool). 📅 **Published**: March 17, 2026. 📋

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

👑 **Privileges**: Full **Administrative Access**. 📊 **Data**: Complete control over financial audit data. ⚠️ **Impact**: High (CVSS 9.8) – Attackers can modify, delete, or steal sensitive financial records. 📂

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

📉 **Threshold**: **LOW**. 🌐 **Network**: Remote (AV:N). 🔑 **Auth**: None required (PR:N). 👤 **User Interaction**: None (UI:N). 🎯 **Complexity**: Low (AC:L). Easy to exploit! 🚀

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

🚫 **Public Exploit**: **No**. 📝 **PoC**: Empty list in data. 👀 **Status**: Theoretical risk based on CVSS score, but no active wild exploitation confirmed yet. ⏳

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

🔍 **Self-Check**: Scan for DrangSoft GCB/FCB services. 🔌 **API Test**: Attempt to access account creation endpoints without valid tokens. 📡 **Monitor**: Look for unauthorized admin user creation logs. 📝

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

🛠️ **Official Fix**: **Unknown/Not Listed**. 📄 **References**: Only third-party advisories (TW-CERT) exist. ⏳ **Action**: Check vendor site for patches urgently. 🏃♂️

Q: What if no patch? (Workaround)

🚧 **Workaround**: 1. **Block Access**: Restrict API ports via Firewall (WAF). 2. **Monitor**: Alert on admin creation events. 3. **Isolate**: Disconnect from public internet if possible. 🛑

Q: Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **CRITICAL**. 📊 **CVSS**: 9.8 (Almost Max). ⚡ **Priority**: Patch immediately or apply strict network isolation. Do not ignore! 🚨

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**: Critical Access Control Error in DrangSoft GCB/FCB Audit Software. <br>📉 **Consequences**: Attackers can bypass authentication to create **new admin accounts**, leading to total system compromise. 💥

Q2Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: **CWE-306** (Missing Authentication for Critical Function). <br>❌ **Flaw**: The software fails to verify identity before allowing API calls for account creation. 🔓

Q3Who is affected? (Versions/Components)

🏢 **Affected Vendor**: DrangSoft. <br>💻 **Product**: GCB/FCB Audit Software (Chinese financial audit tool). <br>📅 **Published**: March 17, 2026. 📋

Q4What can hackers do? (Privileges/Data)

👑 **Privileges**: Full **Administrative Access**. <br>📊 **Data**: Complete control over financial audit data. <br>⚠️ **Impact**: High (CVSS 9.8) – Attackers can modify, delete, or steal sensitive financial records. 📂

Q5Is exploitation threshold high? (Auth/Config)

📉 **Threshold**: **LOW**. <br>🌐 **Network**: Remote (AV:N). <br>🔑 **Auth**: None required (PR:N). <br>👤 **User Interaction**: None (UI:N). <br>🎯 **Complexity**: Low (AC:L). Easy to exploit! 🚀

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

🚫 **Public Exploit**: **No**. <br>📝 **PoC**: Empty list in data. <br>👀 **Status**: Theoretical risk based on CVSS score, but no active wild exploitation confirmed yet. ⏳

Q7How to self-check? (Features/Scanning)

🔍 **Self-Check**: Scan for DrangSoft GCB/FCB services. <br>🔌 **API Test**: Attempt to access account creation endpoints without valid tokens. <br>📡 **Monitor**: Look for unauthorized admin user creation logs. 📝

Q8Is it fixed officially? (Patch/Mitigation)

🛠️ **Official Fix**: **Unknown/Not Listed**. <br>📄 **References**: Only third-party advisories (TW-CERT) exist. <br>⏳ **Action**: Check vendor site for patches urgently. 🏃‍♂️

Q9What if no patch? (Workaround)

🚧 **Workaround**: <br>1. **Block Access**: Restrict API ports via Firewall (WAF). <br>2. **Monitor**: Alert on admin creation events. <br>3. **Isolate**: Disconnect from public internet if possible. 🛑

Q10Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **CRITICAL**. <br>📊 **CVSS**: 9.8 (Almost Max). <br>⚡ **Priority**: Patch immediately or apply strict network isolation. Do not ignore! 🚨

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Vulnerability detail Full AI analysis (login) DrangSoft CWE-306