CVE-2024-21413 KEV
9.8
CRITICAL · CVSS 3.1 · EPSS 94.7% (pctl 100)
Patch first
On CISA KEV — known exploited in the wild, due 2025-02-27.
Description
Microsoft Outlook Remote Code Execution Vulnerability
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 94.66% — more likely to be exploited than 100% of all CVEs |
| Weakness | CWE-20 |
| On CISA KEV | yes — remediate by 2025-02-27 |
| Public exploit | none known |
| Published | 2024-02-13 |
| Last modified | 2026-08-10 |
CISA KEV
| Name | Microsoft Outlook Improper Input Validation Vulnerability |
|---|---|
| Added | 2025-02-06 |
| Due | 2025-02-27 |
| Vendor / product | Microsoft / Office Outlook |
| Ransomware use | none reported |
Affected (4)
| Vendor | Product |
|---|---|
| microsoft | 365 apps |
| microsoft | office 2016 |
| microsoft | office 2019 |
| microsoft | office long term servicing channel |
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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