outlook
Microsoft Outlook bug blocks email logins, causes app crashes
Microsoft is investigating an Outlook bug causing desktop app crashes, high system resource usage, and preventing users from logging into their accounts. While the company said these ongoing issues only affect European customers, users worldwide have since reported experiencing the same sign-in and app instability problems. “We’re investigating an issue in which users in Europe may be experiencing crashing, not […]
Microsoft Office 2024 now available for Windows and macOS users
Microsoft has released Office 2024 for small businesses and consumers who want a standalone version without a Microsoft 365 subscription. Office 2024 includes updated, locked-in-time versions of Word, Excel, PowerPoint, OneNote, and Outlook for Windows and macOS systems. It also requires a Microsoft account and an internet connection (likely needed during the installation and for […]
Microsoft shares Outlook workaround for Gmail sign-in issues
Microsoft has shared a temporary fix for a known issue preventing Microsoft 365 customers from signing in or adding Gmail accounts using classic Outlook. When attempting to synchronize Gmail accounts with their Outlook profile or add a new Gmail account, affected users may encounter the following errors: “This browser or app may not be secure” […]
Microsoft 365 anti-phishing feature can be bypassed with CSS
Researchers have demonstrated a method to bypass an anti-phishing measure in Microsoft 365 (formerly Office 365), elevating the risk of users opening malicious emails. Specifically, the anti-phishing measure that can be hidden is the ‘First Contact Safety Tip,’ which warns email recipients on Outlook when they receive a message from an unfamiliar address. Certitude analysts who discovered […]
New Specula tool uses Outlook for remote code execution in Windows
Microsoft Outlook can be turned into a C2 beacon to remotely execute code, as demonstrated by a new red team post-exploitation framework named “Specula,” released today by cybersecurity firm TrustedSec. This C2 framework works by creating a custom Outlook Home Page using WebView by exploiting CVE-2017-11774, an Outlook security feature bypass vulnerability patched in October 2017. “In […]
Microsoft Outlook Faced Critical Zero-Click RCE Vulnerability
Security researchers have uncovered a critical vulnerability, CVE-2024-38021, affecting most Microsoft Outlook applications. This zero-click remote code execution (RCE) vulnerability, now patched by Microsoft, did not require any authentication, setting it apart from the previously discovered CVE-2024-30103, which required at least an NTLM token. If exploited, CVE-2024-38021 could lead to data breaches, unauthorized access and […]