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

"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 ...

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

Microsoft finds high-severity flaw in hybrid Exchange instances Both Exchange Server 2016 and Exchange Server 2019 are ...

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

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

A Microsoft post in July 2023 cited an inactive signing key acquired by Storm-0558, which was then used to forge tokens for the Azure AD cloud service that stores keys for logins.

A U.S. cyber safety body will review issues relating to cloud-based identity and authentication infrastructure that will include an assessment of a recent Microsoft breach that led to the theft of ...