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Q1What is this vulnerability? (Essence + Consequences)
🚨 **Essence**: Integer Underflow in Microsoft Office. 💥 **Consequences**: Remote Code Execution (RCE). Attackers can run arbitrary code on the victim's machine.
Q2Root Cause? (CWE/Flaw)
🛠️ **Root Cause**: The program decreases an integer value **below its specified minimum**. This logic flaw leads to memory corruption.
🕵️ **Attacker Capabilities**: Gains **full user privileges**. Can execute code with the same rights as the current logged-in user. Data theft or system control is possible.
Q5Is exploitation threshold high? (Auth/Config)
⚠️ **Exploitation Threshold**: **Low**. It is a **Remote** Code Execution vulnerability. No authentication or special configuration is needed to trigger it via malicious documents.
Q6Is there a public Exp? (PoC/Wild Exploitation)
💣 **Public Exploit**: **Yes**. Exploit-DB ID **37924** is available. Wild exploitation is possible since the PoC is public.
Q7How to self-check? (Features/Scanning)
🔍 **Self-Check**: Scan for installed Office versions listed in Q3. Check for **MS15-081** update status. Look for malformed Office files in email attachments.
Q8Is it fixed officially? (Patch/Mitigation)
✅ **Official Fix**: **Yes**. Microsoft released patch **MS15-081**. Users must apply this security update immediately to close the hole.
Q9What if no patch? (Workaround)
🛡️ **No Patch Workaround**: Enable **Protected View** for all Office files from the internet. Disable macro execution. Avoid opening suspicious .doc/.xls files.
Q10Is it urgent? (Priority Suggestion)
🔥 **Urgency**: **CRITICAL**. High impact (RCE) + Public Exploit + Wide impact. Patch **immediately** to prevent compromise.