CVE-2024-21413: Microsoft Outlook Improper Input Validation Vulnerability
Microsoft Outlook contains an improper input validation vulnerability that allows for remote code execution. Successful exploitation of this vulnerability would allow an attacker to bypass the Office Protected View and open in editing mode rather than protected mode.
| Vendor | Microsoft |
|---|---|
| Product | Office Outlook |
| Date added to KEV | 2025-02-06 |
| Due date (BOD 22-01) | 2025-02-27 |
| Known ransomware campaign use | Unknown |
| CWE | CWE-20 |
| Required action | Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. |
What to do
- Identify every instance of Microsoft Office Outlook in your environment (asset inventory, EDR, vulnerability scanner).
- Apply CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- Federal civilian agencies must act by 2025-02-27 under BOD 22-01; other organizations can use the same date as a target.
- Check the vendor advisory and NVD entry linked below for affected versions, then record the fix in your change log.
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