CVE-2024-21413

Microsoft Outlook Remote Code Execution Vulnerability

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21413	Patch Vendor Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21413	Patch Vendor Advisory
https://research.checkpoint.com/2024/the-risks-of-the-monikerlink-bug-in-microsoft-outlook-and-the-big-picture/	Technical Description
https://www.vicarius.io/vsociety/posts/cve-2024-21413-critical-monikerlink-vulnerability-affecting-microsoft-outlook-detection-script	Exploit
https://www.vicarius.io/vsociety/posts/cve-2024-21413-critical-monikerlink-vulnerability-affecting-microsoft-outlook-mitigation-script	Mitigation

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:microsoft:365_apps:-::::enterprise:::
	cpe:2.3:a:microsoft:office:2016::-::-::-:
	cpe:2.3:a:microsoft:office:2019:::::::*
	cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:::::::*

History

29 May 2025, 16:32

Type	Values Removed	Values Added
References	~~() 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-detection-script - Exploit
References	~~() https://www.vicarius.io/vsociety/posts/cve-2024-21413-critical-monikerlink-vulnerability-affecting-microsoft-outlook-mitigation-script -~~	() https://www.vicarius.io/vsociety/posts/cve-2024-21413-critical-monikerlink-vulnerability-affecting-microsoft-outlook-mitigation-script - Mitigation

29 May 2025, 14:15

Type	Values Removed	Values Added
References		() 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 -
References	~~() https://research.checkpoint.com/2024/the-risks-of-the-monikerlink-bug-in-microsoft-outlook-and-the-big-picture/ -~~	() https://research.checkpoint.com/2024/the-risks-of-the-monikerlink-bug-in-microsoft-outlook-and-the-big-picture/ - Technical Description

21 Nov 2024, 08:54

Type	Values Removed	Values Added
References		() https://research.checkpoint.com/2024/the-risks-of-the-monikerlink-bug-in-microsoft-outlook-and-the-big-picture/ -
References	~~() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21413 - Patch, Vendor Advisory~~	() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21413 - Patch, Vendor Advisory

09 Oct 2024, 02:15

Type	Values Removed	Values Added
References	{'url': 'https://research.checkpoint.com/2024/the-risks-of-the-monikerlink-bug-in-microsoft-outlook-and-the-big-picture/', 'tags': ['Technical Description', 'Third Party Advisory'], 'source': 'secure@microsoft.com'}

29 May 2024, 00:15

Type	Values Removed	Values Added
CWE		CWE-20

28 May 2024, 21:16

Type	Values Removed	Values Added
CWE	~~CWE-20~~

23 Feb 2024, 21:04

Type	Values Removed	Values Added
CWE		NVD-CWE-noinfo
References	~~() https://research.checkpoint.com/2024/the-risks-of-the-monikerlink-bug-in-microsoft-outlook-and-the-big-picture/ -~~	() https://research.checkpoint.com/2024/the-risks-of-the-monikerlink-bug-in-microsoft-outlook-and-the-big-picture/ - Technical Description, Third Party Advisory
References	~~() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21413 -~~	() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21413 - Patch, Vendor Advisory
CPE		cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:::::::* cpe:2.3:a:microsoft:office:2019:::::::* cpe:2.3:a:microsoft:365_apps:-::::enterprise::: cpe:2.3:a:microsoft:office:2016::-::-::-:
First Time		Microsoft 365 Apps Microsoft Microsoft office Microsoft office Long Term Servicing Channel

15 Feb 2024, 04:15

Type	Values Removed	Values Added
References		() https://research.checkpoint.com/2024/the-risks-of-the-monikerlink-bug-in-microsoft-outlook-and-the-big-picture/ -

13 Feb 2024, 18:22

Type	Values Removed	Values Added
New CVE

Information

Published : 2024-02-13 18:16

Updated : 2025-05-29 16:32

NVD link : CVE-2024-21413

Mitre link : CVE-2024-21413

CVE.ORG link : CVE-2024-21413

JSON object : View

Products Affected

microsoft

office
office_long_term_servicing_channel
365_apps

CWE

CWE-20

Improper Input Validation

NVD-CWE-noinfo

{"id": "CVE-2024-21413", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "secure@microsoft.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "published": "2024-02-13T18:16:00.137", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21413", "tags": ["Patch", "Vendor Advisory"], "source": "secure@microsoft.com"}, {"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21413", "tags": ["Patch", "Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://research.checkpoint.com/2024/the-risks-of-the-monikerlink-bug-in-microsoft-outlook-and-the-big-picture/", "tags": ["Technical Description"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.vicarius.io/vsociety/posts/cve-2024-21413-critical-monikerlink-vulnerability-affecting-microsoft-outlook-detection-script", "tags": ["Exploit"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.vicarius.io/vsociety/posts/cve-2024-21413-critical-monikerlink-vulnerability-affecting-microsoft-outlook-mitigation-script", "tags": ["Mitigation"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "secure@microsoft.com", "description": [{"lang": "en", "value": "CWE-20"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "Microsoft Outlook Remote Code Execution Vulnerability"}, {"lang": "es", "value": "Vulnerabilidad de ejecuci\u00f3n remota de c\u00f3digo de Microsoft Outlook"}], "lastModified": "2025-05-29T16:32:14.040", "cisaActionDue": "2025-02-27", "cisaExploitAdd": "2025-02-06", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "40C15EDD-98D4-4D06-BA06-21AE0F33C72D"}, {"criteria": "cpe:2.3:a:microsoft:office:2016:*:-:*:-:*:-:*", "vulnerable": true, "matchCriteriaId": "DC9D0A78-9F16-41E0-910E-E93269DB9B30"}, {"criteria": "cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FF177984-A906-43FA-BF60-298133FBBD6B"}, {"criteria": "cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0B3EF1E5-4757-4CFA-AE72-6BA876D3C9FD"}], "operator": "OR"}]}], "sourceIdentifier": "secure@microsoft.com", "cisaRequiredAction": "Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.", "cisaVulnerabilityName": "Microsoft Outlook Improper Input Validation Vulnerability"}

9.8 /10