CVE-2025-54905

FAQ

Is the Preview Pane an attack vector for this vulnerability?

Yes, the Preview Pane is an attack vector.

Are the updates for Microsoft Office LTSC for Mac 2021 and 2024 currently available?

Yes. As of September 15, 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, user interaction is required (UI:R). What interaction would the user have to do?

An attacker must send the user a malicious file and convince them to open it.

What type of information could be disclosed by this vulnerability?

An attacker who successfully exploited this vulnerability could potentially read small portions of heap memory.

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 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.