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

🔍 **Check**: Scan for Sophos Firewall versions < 21.0 MR2. <br>👀 **Feature**: Look for active use of 'Secure PDF eXchange' functionality.

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

✅ **Fix**: Upgrade to **Sophos Firewall 21.0 MR2** or later. <br>📝 **Ref**: See Sophos Security Advisory SA-20250721-SFOS-RCE.

Q: What if no patch? (Workaround)

🛑 **Workaround**: Disable 'Secure PDF eXchange' feature immediately if patching is delayed. <br>🚧 **Mitigate**: Restrict network access to the management interface.

Q: Is it urgent? (Priority Suggestion)

🔥 **Urgency**: CRITICAL. <br>🚀 **Priority**: Patch IMMEDIATELY. Pre-auth RCE is a top-tier threat for infrastructure.

Question 1

What is this vulnerability? (Essence + Consequences)

Accepted Answer

🚨 **Essence**: Arbitrary file write in Secure PDF eXchange.
💥 **Consequences**: Pre-auth Remote Code Execution (RCE). Critical impact on Confidentiality, Integrity, and Availability.

Question 2

Root Cause? (CWE/Flaw)

Accepted Answer

🛡️ **Root Cause**: CWE-78 (OS Command Injection).
🔍 **Flaw**: The Secure PDF eXchange feature allows attackers to write arbitrary files to the system.

Question 3

Who is affected? (Versions/Components)

Accepted Answer

🏢 **Vendor**: Sophos.
📦 **Product**: Sophos Firewall.
📅 **Affected**: Versions **before** 21.0 MR2.

Question 4

What can hackers do? (Privileges/Data)

Accepted Answer

👑 **Privileges**: Full system control via RCE.
📂 **Data**: Complete compromise of firewall configurations and protected network data.

Question 5

Is exploitation threshold high? (Auth/Config)

Accepted Answer

🔓 **Threshold**: LOW.
🌐 **Auth**: Pre-authentication required.
📡 **Network**: Network accessible (AV:N). No user interaction needed.

Question 6

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

Accepted Answer

📜 **Public Exp?**: No PoCs listed in data.
⚠️ **Risk**: High CVSS score suggests easy exploitation potential despite lack of public code.

Question 7

How to self-check? (Features/Scanning)

Accepted Answer

🔍 **Check**: Scan for Sophos Firewall versions < 21.0 MR2.
👀 **Feature**: Look for active use of 'Secure PDF eXchange' functionality.

Question 8

Is it fixed officially? (Patch/Mitigation)

Accepted Answer

✅ **Fix**: Upgrade to **Sophos Firewall 21.0 MR2** or later.
📝 **Ref**: See Sophos Security Advisory SA-20250721-SFOS-RCE.

Question 9

What if no patch? (Workaround)

Accepted Answer

🛑 **Workaround**: Disable 'Secure PDF eXchange' feature immediately if patching is delayed.
🚧 **Mitigate**: Restrict network access to the management interface.

Question 10

Is it urgent? (Priority Suggestion)

Accepted Answer

🔥 **Urgency**: CRITICAL.
🚀 **Priority**: Patch IMMEDIATELY. Pre-auth RCE is a top-tier threat for infrastructure.

Goal Reached Thanks to every supporter — we hit 100%!

CVE-2025-6704 — AI Deep Analysis Summary

Q1What is this vulnerability? (Essence + Consequences)

Q2Root Cause? (CWE/Flaw)

Q3Who is affected? (Versions/Components)

Q4What can hackers do? (Privileges/Data)

Q5Is exploitation threshold high? (Auth/Config)

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

Q7How to self-check? (Features/Scanning)

Q8Is it fixed officially? (Patch/Mitigation)

Q9What if no patch? (Workaround)

Q10Is it urgent? (Priority Suggestion)

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