No reported in-the-wild exploits…yet Microsoft and the feds late Wednesday sounded the alarm on another high-severity bug in ...

Microsoft has urged its customers to be on high alert after discovering a dangerous vulnerability in hybrid Exchange ...

"In an Exchange hybrid deployment, an attacker who first gains administrative access to an on-premises Exchange server could ...

Microsoft has warned customers to mitigate a high-severity vulnerability in Exchange Server hybrid deployments that could ...

Parts of the federal enterprise are likely susceptible to the flaw that allows hackers to hijack on-premises versions of ...

If an attacker gets admin control over the on-premises Exchange server, they can forge authentication tokens or make API ...

A vulnerability in Exchange hybrid deployments could allow attackers to escalate privileges and gain administrative access to ...

CISA is giving agencies until 9 a.m. Monday to address a vulnerability that, left unaddressed, could allow hackers to achieve ...

CISA and Microsoft have issued advisories for CVE-2025-53786, a high-severity flaw allowing privilege escalation in cloud environments.

CISA has issued an emergency directive to address a security risk that could affect hybrid Microsoft Exchange users and ...

Administrators with hybrid Exchange Server environments are urged by Microsoft and the US Cybersecurity and Infrastructure ...

A day after Microsoft’s Lync instant messaging service suffered a global outage, its Exchange Online customers are now having problems with the cloud email service. Customers began experiencing ...