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OpenAdvisories
High · 8.8 Exploitation more likely Public exploit CVE-2024-21378 EUVD-2024-19090GHSA-qm4q-xhjm-67jr

Microsoft Outlook Remote Code Execution Vulnerability

Published Feb 13, 2024 · Updated Aug 10, 2026 · Assigned by microsoft

Description

Microsoft Outlook Remote Code Execution Vulnerability

Affected products

VendorProductAffectedFixed
Microsoft Microsoft 365 Apps for Enterprise 16.0.1 – < https://aka.ms/OfficeSecurityReleases https://aka.ms/OfficeSecurityReleases
Microsoft Microsoft Office 2019 19.0.0 – < https://aka.ms/OfficeSecurityReleases https://aka.ms/OfficeSecurityReleases
Microsoft Microsoft Office LTSC 2021 16.0.1 – < https://aka.ms/OfficeSecurityReleases https://aka.ms/OfficeSecurityReleases
Microsoft Microsoft Outlook 2016 16.0.0.0 – < 16.0.5435.1000 16.0.5435.1000

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

  • d0rb/CVE-2024-21378 ★ 9 · Mar 12, 2024

    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…

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 2

References