Is CVE-2024-21413 actively exploited?

CVE-2024-21413 has no public evidence of in-the-wild exploitation as of 2025-10-28.

What is the CVSS score for CVE-2024-21413?

CVE-2024-21413 has a CVSS score of 9.8 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2024-21413?

Patch guidance is available from microsoft security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2024-21413.

Fix CVE-2024-21413 - CRITICAL microsoft 365 apps

Q: Which products are affected by CVE-2024-21413?

6 products: microsoft 365 apps, microsoft office 2016, microsoft office 2016, microsoft office 2019, microsoft office 2019, and 1 more.

Description

Microsoft Outlook Remote Code Execution Vulnerability

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-20 · Improper Input ValidationNVD-CWE-noinfo

Metadata

Primary Vendor: MICROSOFT
Published: 2/13/2024
Last Modified: 10/28/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

microsoft : 365_appsmicrosoft : office_2016microsoft : office_2016microsoft : office_2019microsoft : office_2019microsoft : office_long_term_servicing_channel

Remediation Guidance

Executive Summary

View on NIST NVD