CVE-2024-21413
Microsoft Outlook Improper Input Validation Vulnerability
Microsoft · Office Outlook
Vulnerability details
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.
Added to CISA KEV: 2025-02-06
Ransomware campaign use: Unknown
CISA due date: 2025-02-27
Defensive guidance from CISA
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
This is the source's required-action field, not an independently validated patch procedure. Refer to the vendor for exact affected versions and fixes.
Source catalog date: 2026-11-06T19:44:45.1797Z · Last retrieved: 2026-11-06 21:02:26 UTC