In summary, Microsoft says that attackers secure access to an Exchange Server either through these bugs or stolen credentials and they can then create a web shell to hijack the system and execute ...

Microsoft has confirmed two unpatched Exchange Server zero-day vulnerabilities ... vulnerabilities to create backdoors on the victim’s system and also move laterally through the compromised ...

Microsoft Exchange Routing Engine Microsoft Exchange Site Replication Service Microsoft Exchange System Attendant Network News Transfer Protocol (NNTP) Simple Mail Transfer Protocol (SMTP ...

Microsoft blamed the issues on “a recent change to an authentication system” took some Microsoft ... alongside Office web apps, Exchange Online, SharePoint Online, and other Microsoft services.

Threat actors are exploiting yet-to-be-disclosed Microsoft Exchange zero-day bugs allowing ... the attacker to do RCE on the compromised system," the researchers said. GTSC suspects that a Chinese ...

Organizations will be facing a new "transport-based enforcement system" that could eventually block e-mail traffic from out-of-support or unpatched Exchange Server installations. Microsoft is ...

An attacker who successfully exploited this vulnerability could cause the Microsoft Exchange System Attendant service and other services that use the EMSMDB32 provider to stop responding.

Microsoft Exchange and Teams Calendar are currently down worldwide, with Outlook also "crashing," according to users who said they could not view or send emails. Microsoft did not specify the ...

Thus, the availability of an e-mail system has become just as important a topic as recovering it in the event of a disaster. If you don’t believe me, stop the Microsoft Exchange Information Store ...

Many small businesses run a Microsoft Exchange server to manage their employee's email, calendar and address book data. As an Exchange system administrator, you have the ability to configure ...

Both vulnerabilities impact Microsoft Exchange Server on-premises and hybrid ... able to access all backend URLs with the NT AUTHORITY/SYSTEM permissions—something a regular OWA user wouldn ...

Microsoft is shutting down its cross-platform Exchange Web Services (EWS) API from October 1 2026, meaning users won’t be able to access their emails and contacts from Exchange Online.