Microsoft has officially warned users about the existence of a vulnerability that could allow hackers to easily spread malware through the Outlook email application. The company has also released a patch for this user-after-free vulnerability (currently tracked as CVE-2025-21298), and urged users to apply it immediately.
The vulnerability, CVE-2025-21298, is rated as critical (9.8) and can cause the use of freed memory to corrupt valid data or remotely deliver malware. The flaw resides in the Object Linking and Embedding (OLED) feature of Windows, which allows users to embed and link to other documents and objects, such as adding Excel charts to Word documents. The vulnerability is also particularly dangerous because it allows users to be infected with malware when previewing specially crafted emails.
“Exploitation of the vulnerability could occur if a victim opens a specially crafted email using an affected version of Microsoft Outlook software, or if the victim’s Outlook application displays a preview of a specially crafted email. This could result in an attacker executing remote code on the victim’s machine ,” Microsoft said in a security alert .
If you can't apply the patch at this time, Microsoft recommends taking steps like viewing your email on large LANs as plain text, and disabling or restricting NTLM traffic altogether.
What happens when you view your email in plain text? Basically, all the animations, images, and fonts are removed. Your email won't look as fancy in plain text, but it's necessary to avoid interruptions while you wait for the update to the new version of Outlook.
Recovery ToolBox for Outlook Password, a powerful tool designed to recover lost or forgotten passwords from email accounts and PST files of Microsoft Outlook applications.
Microsoft has included a handy productivity feature called Quick Steps to help automate a series of steps.
How to view and recover Microsoft Outlook password, How to view Outlook password on computer is not difficult. This article will guide you how to view and recover Outlook password
How to fix common errors on Microsoft Outlook, Outlook errors often arise during use. Here is a list of common errors on Microsoft Outlook
Fix Outlook error asking for password continuously, You get an error Outlook asking for password continuously. This article, WebTech360 will guide you how to fix it.
How to edit received email in Microsoft Outlook, Subject and body of received email are sender's but you can change subject line or add content note
To ensure that only the recipient can read the message, you should encrypt Email via GPG (GNU Privacy Gaurd) to use public or private keys when encrypting Email. The following article will introduce readers how to encrypt email in Outlook with GPG.
When installing Microsoft Outlook for the first time, the software automatically sets the text editor font and reads the message to Calibri or Arial. If this is not the font you like, you can adjust the font settings to suit your needs.
Does your business regularly check and respond to emails every day? If you rely on Microsoft Outlook to handle daily email, you definitely need to know the following keyboard shortcuts to speed up work on Microsoft Outlook faster.
Importing contacts to Microsoft Outlook on Mac is quite simple with just a few easy steps. However, you must export the list of people to a VCF file first.
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