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CVE-2024-21378— Microsoft Outlook Remote Code Execution Vulnerability

Quick assessment

Affected
Microsoft Microsoft 365 Apps for Enterprise
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Outlook是美国微软（Microsoft）公司的一套电子邮件应用程序。 Microsoft Office Outlook存在安全漏洞。以下产品和版本受到影响：Microsoft Office 2019 for 32-bit editions,Microsoft Office 2019 for 64-bit editions,Microsoft 365 Apps for Enterprise for 32-bit Systems,Microsoft 365 Apps for Ente

CVSS 8.8 · High EPSS 10.98% · P96

Affected Version Matrix 4

VendorProduct Version RangeStatus
Microsoft Microsoft 365 Apps for Enterprise 16.0.1< https://aka.ms/OfficeSecurityReleases affected
Microsoft Microsoft Office 2019 19.0.0< https://aka.ms/OfficeSecurityReleases affected
Microsoft Microsoft Office LTSC 2021 16.0.1< https://aka.ms/OfficeSecurityReleases affected
Microsoft Microsoft Outlook 2016 16.0.0.0< 16.0.5435.1000 affected
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I. Basic Information for CVE-2024-21378

Vulnerability Information
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Microsoft Outlook Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Microsoft Outlook Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Outlook 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Outlook是美国微软（Microsoft）公司的一套电子邮件应用程序。 Microsoft Office Outlook存在安全漏洞。以下产品和版本受到影响：Microsoft Office 2019 for 32-bit editions,Microsoft Office 2019 for 64-bit editions,Microsoft 365 Apps for Enterprise for 32-bit Systems,Microsoft 365 Apps for Ente
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Microsoft 365 Apps for Enterprise 16.0.1 ~ https://aka.ms/OfficeSecurityReleases -
Microsoft Microsoft Office 2019 19.0.0 ~ https://aka.ms/OfficeSecurityReleases -
Microsoft Microsoft Office LTSC 2021 16.0.1 ~ https://aka.ms/OfficeSecurityReleases -
Microsoft Microsoft Outlook 2016 16.0.0.0 ~ 16.0.5435.1000 -

II. Public POCs for CVE-2024-21378

# POC Description Source Link Shenlong Link
1 This repository contains an exploit for targeting Microsoft Outlook through Exchange Online, leveraging a vulnerability to execute arbitrary code via COM DLLs. The exploit utilizes a modified version of Ruler to send a malicious form as an email, triggering the execution upon user interaction within the Outlook thick client. https://github.com/d0rb/CVE-2024-21378 POC Details
2 PoC Exploit for Outlook Vulnerability, CVE-2024-21378 https://github.com/JohnHormond/CVE-2024-21378 POC Details
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III. Intelligence Information for CVE-2024-21378

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Vendor Advisories for CVE-2024-21378 (1)

Same Patch Batch · Microsoft · 2024-02-13 · 72 CVEs total

CVE-2024-21401 9.8 CRITICAL Microsoft Entra Jira Single-Sign-On Plugin Elevation of Privilege Vulnerability
CVE-2024-21413 9.8 CRITICAL Microsoft Outlook Remote Code Execution Vulnerability
CVE-2024-21410 9.8 CRITICAL Microsoft Exchange Server Elevation of Privilege Vulnerability
CVE-2024-21364 9.3 CRITICAL Microsoft Azure Site Recovery Elevation of Privilege Vulnerability
CVE-2024-21403 9.0 CRITICAL Microsoft Azure Kubernetes Service Confidential Container Elevation of Privilege Vulnerabi
CVE-2024-21376 9.0 CRITICAL Microsoft Azure Kubernetes Service Confidential Container Remote Code Execution Vulnerabil
CVE-2024-21375 8.8 HIGH Microsoft WDAC OLE DB provider for SQL Server Remote Code Execution Vulnerability
CVE-2024-21353 8.8 HIGH Microsoft WDAC ODBC Driver Remote Code Execution Vulnerability
CVE-2024-21352 8.8 HIGH Microsoft WDAC OLE DB provider for SQL Server Remote Code Execution Vulnerability
CVE-2024-21350 8.8 HIGH Microsoft WDAC OLE DB provider for SQL Server Remote Code Execution Vulnerability
CVE-2024-21366 8.8 HIGH Microsoft WDAC OLE DB provider for SQL Server Remote Code Execution Vulnerability
CVE-2024-21349 8.8 HIGH Microsoft ActiveX Data Objects Remote Code Execution Vulnerability
CVE-2024-21369 8.8 HIGH Microsoft WDAC OLE DB provider for SQL Server Remote Code Execution Vulnerability
CVE-2024-21391 8.8 HIGH Microsoft WDAC OLE DB provider for SQL Server Remote Code Execution Vulnerability
CVE-2024-21372 8.8 HIGH Windows OLE Remote Code Execution Vulnerability
CVE-2024-21361 8.8 HIGH Microsoft WDAC OLE DB provider for SQL Server Remote Code Execution Vulnerability
CVE-2024-21365 8.8 HIGH Microsoft WDAC OLE DB provider for SQL Server Remote Code Execution Vulnerability
CVE-2024-21370 8.8 HIGH Microsoft WDAC OLE DB provider for SQL Server Remote Code Execution Vulnerability
CVE-2024-21368 8.8 HIGH Microsoft WDAC OLE DB provider for SQL Server Remote Code Execution Vulnerability
CVE-2024-21367 8.8 HIGH Microsoft WDAC OLE DB provider for SQL Server Remote Code Execution Vulnerability

Showing top 20 of 72 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Microsoft 365 Apps for Enterprise
Same vendor: Microsoft
Same weakness: CWE-94

V. Comments for CVE-2024-21378

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