THREATSIMPLIFIED

Critical Microsoft Office Vulnerability Found: Immediate Action Required

By Threat Simplified Team9/22/2025

A serious security issue in Microsoft Office could allow unauthorized users to execute harmful code on your computer. Update your software now to stay protected!

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Critical Microsoft Office Vulnerability Found: Immediate Action Required

CVE-2025-54910
CYBERSECURITY ALERT
THREAT SIMPLIFIED

Critical Microsoft Office Vulnerability Found: Immediate Action Required

A recently discovered vulnerability in Microsoft Office could put unsuspecting users at risk. This flaw, identified as CVE-2025-54910, allows unauthorized attackers to execute code on your computer without any needed permissions or interaction from you. Imagine if someone could sneak a dangerous note into your mailbox without you ever knowing; that's the kind of risk this vulnerability poses.

Who is at Risk?

This issue affects anyone using Microsoft Office products, particularly on the recent versions:

  • Microsoft Office 2016 (both 64-bit and 32-bit editions)
  • Microsoft Office 2019 (both editions)
  • Microsoft Office LTSC 2021 and 2024 (both editions)
  • Microsoft 365 Apps for Enterprise (both editions)
  • Microsoft Office for Mac (2021 and 2024)

If you are using any of these versions, you are at risk of attackers potentially executing harmful code on your system.

How to Stay Safe

It’s crucial to act quickly to protect yourself. Here’s what you can do:

  • Update Your Software: Check for the latest updates available for your version of Microsoft Office. You can usually find this option in the settings menu of your application. Here’s how:
    • Open your Microsoft Office application.
    • Navigate to File > Account > Update Options > Update Now.
  • Be Cautious of the Preview Pane: Avoid using the Preview Pane feature if you are unsure about the emails or documents you are opening until the update is applied to avoid potential exploits.

These protective measures can significantly reduce the chances of an attacker exploiting this vulnerability, so don’t delay.

📖 Learn more: For further details and updates, you can visit CVE-2025-54910 at Microsoft

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