Live › vulnerability › CVE-2024-21413
Go to dashboardMicrosoft Outlook has an improper input validation flaw in how it handles links, which lets a crafted message bypass Office Protected View and open content in editing mode. The sources say the bug allows remote code execution and that it is being exploited in the wild.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Microsoft Office Outlook | vendor | – | – |
| microsoft 365 apps | vendor | – | – |
| microsoft office 2016 | vendor | – | – |
| microsoft office 2019 | vendor | – | – |
| microsoft office long term servicing channel | vendor | = 2021 | – |
Unknown from the sources.
Apply mitigations per vendor instructions, or discontinue use of the product if mitigations are unavailable (per CISA required action).
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Microsoft Outlook contains an improper input validation vulnerability that allows for remote code execution. Successful exploitation of this vulnerability would allow an attacker to bypass the Office Protected View and open in editing mode rather than protected mode.
CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
This page as .md · .json · in your agent: get_signal("CVE-2024-21413")
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