CVE-2024-21413—Microsoft Outlook Improper Input Validation Vulnerability

Vulnerability Name

Microsoft Outlook Improper Input Validation Vulnerability

Description

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.

Known To Be Used in Ransomware Campaigns?

Ransomware Status:

Unknown

Action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Additional Notes

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21413
• https://nvd.nist.gov/vuln/detail/CVE-2024-21413

Related News Articles

• CISA tags Windows, Cisco vulnerabilities as actively exploitedMarch 3, 2025
• XE Hacker Group Exploits VeraCore Zero-Day to Deploy Persistent Web ShellsFebruary 10, 2025
• Critical RCE bug in Microsoft Outlook now exploited in attacksFebruary 6, 2025

Related Weaknesses

• CWE-20