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

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

The security problem affects organizations with a hybrid Exchange environment, running applications in both on-premises ...

CISA has issued an emergency directive ordering all Federal Civilian Executive Branch (FCEB) agencies to mitigate a critical ...

Microsoft Exchange customers have been urged to apply fixes set out in a hybrid deployment security update published in April ...

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

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

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

The Cybersecurity and Infrastructure Security Agency (CISA) and Microsoft late Wednesday warned that a new high-severity ...

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

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

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