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High MSRC-CVE-2025-62562 1 CVE

Microsoft Outlook Remote Code Execution Vulnerability

Published Dec 9, 2025 · Updated Dec 17, 2025 · Revision 3

Vendor: Microsoft

Summary

Impact: Remote Code Execution. Microsoft rating: Important. Not known to be exploited — Exploitation Unlikely. Customer action: Required.

Details

Is the Preview Pane an attack vector for this vulnerability?
No, the Preview Pane is not an attack vector.

There are multiple update packages available for some of the affected software. Do I need to install all the updates listed in the Security Updates table for the software?
Yes. Customers should apply all updates offered for the software installed on their systems. If multiple updates apply, they can be installed in any order.

Are the updates for Microsoft Office LTSC for Mac 2021 and 2024 currently available?
Yes. As of December 16, 2025, the security update for Microsoft Office LTSC for Mac 2021 and 2024 are available. Customers running Microsoft Office LTSC for Mac 2021 and 2024 should ensure the update is installed to be protected from this vulnerability.

According to the CVSS metric, the attack vector is local (AV:L). Why does the CVE title indicate that this is a remote code execution?
The word Remote in the title refers to the location of the attacker. This type of exploit is sometimes referred to as Arbitrary Code Execution (ACE). The attack itself is carried out locally. This means an attacker or victim needs to execute code from the local machine to exploit the vulnerability.

According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?
An attacker must send the user a malicious email and convince them to reply to it.

Are the updates for the Microsoft Office LTSC for Mac currently available?
The security update for Microsoft Office LTSC for Mac 2021 and 2024 are not immediately available. The updates will be released as soon as possible, and when they are available, customers will be notified via a revision to this CVE information.

Security updates
16.0.5530.1000 — https://support.microsoft.com/help/5002821
16.0.5530.1000 — https://support.microsoft.com/help/5002804
16.0.10417.20075 — https://support.microsoft.com/help/5002816
16.0.10417.20075 — https://support.microsoft.com/help/5002802
https — https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
16.104.25121423 — https://go.microsoft.com/fwlink/p/?linkid=831049
16.0.5530.1000 — https://support.microsoft.com/help/5002806

Vulnerabilities 1

Revision history

  1. #3

    Microsoft is announcing the availability of the security updates for Microsoft Office for Mac. Customers running affected Mac software should install the update for their product to be protected from this vulnerability. Customers running other Microsoft Office software do not need to take any action. See the [Release Notes](https://go.microsoft.com/fwlink/p/?linkid=831049) for more information and download links.

  2. #1

    Information published.

  3. #2

    Corrected severity entries in the Affected Products table. This is an informational change only. Customers who have successfully installed the update do not need to take any further action.

References