CVE-2024-21413

CRITICAL CISA KEV
Published Feb 13, 2024 Modified Oct 28, 2025 CWE-20

Description

Microsoft Outlook Remote Code Execution Vulnerability

CVSS v3.1 Score

9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA Known Exploited Vulnerability

This vulnerability is actively exploited in the wild.

Added: Feb 6, 2025 Remediation due: Feb 27, 2025

Weakness Type (CWE)

CWE-20 Improper Input Validation

Affected Products

Vendor Product
microsoft 365_apps
microsoft office_2016
microsoft office_2016
microsoft office_2019
microsoft office_2019
microsoft office_long_term_servicing_channel

References

Frequently Asked Questions

What is CVE-2024-21413? +
Microsoft Outlook Remote Code Execution Vulnerability It has a CVSS v3.1 base score of 9.8 (CRITICAL). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.
How severe is CVE-2024-21413? +
CVE-2024-21413 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.
What products are affected by CVE-2024-21413? +
CVE-2024-21413 affects products from microsoft, specifically: 365_apps, office_2016, office_2019, office_long_term_servicing_channel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-21413? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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