Question 1

What is this vulnerability? (Essence + Consequences)

Accepted Answer

🚨 **Essence**: Microsoft Word has a **Security Feature Bypass** vulnerability.…

Question 2

Root Cause? (CWE/Flaw)

Accepted Answer

🛡️ **Root Cause**: **CWE-807** (Security Feature Bypass).
⚠️ **Flaw**: The application fails to properly validate or enforce security mechanisms, allowing unauthorized actions or data access.

Question 3

Who is affected? (Versions/Components)

Accepted Answer

📦 **Affected Products**:
• Microsoft 365 Apps for Enterprise (32-bit & 64-bit)
• Microsoft Office LTSC for Mac 2021
• Other Microsoft Office variants (truncated in data)

Question 4

What can hackers do? (Privileges/Data)

Accepted Answer

💻 **Attacker Capabilities**:
• **Privileges**: Local access required (AV:L).
• **Data**: High risk of data exposure (C:H) and modification (I:H).…

Question 5

Is exploitation threshold high? (Auth/Config)

Accepted Answer

🔓 **Exploitation Threshold**:
• **Auth**: No privileges needed (PR:N).
• **UI**: User interaction required (UI:R) – e.g., opening a malicious file.
• **Complexity**: Low (AC:L).…

Question 6

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

Accepted Answer

🕵️ **Public Exploit**: **No**.
• `pocs` array is empty.
• No wild exploitation reported yet.
• Relies on vendor advisory for details.

Question 7

How to self-check? (Features/Scanning)

Accepted Answer

🔍 **Self-Check**:
1. Verify Office version (M365 or LTSC Mac 2021).
2. Check for latest security updates.
3. Monitor for unusual Word behavior or security warnings being ignored.

Question 8

Is it fixed officially? (Patch/Mitigation)

Accepted Answer

🩹 **Official Fix**: **Yes**.
• Microsoft has issued an advisory.
• Link: [MSRC Update Guide](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21514).…

Question 9

What if no patch? (Workaround)

Accepted Answer

🛑 **No Patch Workaround**:
• Disable macro execution if possible.
• Use Protected View for untrusted documents.
• Restrict file opening to trusted sources only.

Question 10

Is it urgent? (Priority Suggestion)

Accepted Answer

⚡ **Urgency**: **HIGH**.
• CVSS Score indicates **High** severity (C:H, I:H, A:H).
• Low complexity + No auth needed = Easy target.
• **Action**: Patch immediately upon release.

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CVE-2026-21514 — 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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