Critical Vulnerability in Microsoft Outlook: How to Fix
Protect your system from the critical CVE-2023-23397 vulnerability in Microsoft Outlook! Learn how to fix it and safeguard your information from potential attackers with Microsoft’s recommended solutions. #MicrosoftOutlook #cybersecurity #CVE-2023-23397
Microsoft has announced a critical elevation of privilege (EoP) authentication bypass vulnerability affecting all versions of Windows Outlook, called CVE-2023-23397. This zero-touch exploit can be triggered with no user interaction, and can result in an attacker gaining access to user information such as passwords or usernames. The vulnerability affects all supported versions of Microsoft Outlook for Windows, including Microsoft 365 Windows Outlook app. Microsoft has released a patch for the issue and recommends disabling WebClient service, adding users to the Protected Users Security Group, and enforcing SMB signing on clients and servers to prevent a relay attack. Microsoft has also provided a PowerShell script to scan emails, calendar entries, and task items to identify and remove the problematic “PidLidReminderFileParameter” property.