CVE-2024-21413

Microsoft Outlook Remote Code Execution Vulnerability

CVSS v3 vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-20, NVD-CWE-noinfo

Threats tracking this CVE

• Microsoft NTLM Phase-Out: Detection & Migration Guidance — MEDIUM
• Microsoft Office Zero-Day CVE-2026-21509: OLE Security Bypass Under Active Exploitation — HIGH
• Microsoft NTLM Deprecation - Three-Stage Phase-Out Plan — HIGH

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21413
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21413
• https://research.checkpoint.com/2024/the-risks-of-the-monikerlink-bug-in-microsoft-outlook-and-the-big-picture/
• https://www.vicarius.io/vsociety/posts/cve-2024-21413-critical-monikerlink-vulnerability-affecting-microsoft-outlook-detection-script
• https://www.vicarius.io/vsociety/posts/cve-2024-21413-critical-monikerlink-vulnerability-affecting-microsoft-outlook-mitigation-script
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-21413

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