Exchange Server
The latest Exchange Server coverage — news, analysis, and updates from the WindowsNews.AI desk.
CVE-2025-25007: Critical Exchange Server Spoofing Vulnerability Demands Immediate Action Despite Scant Details
A newly disclosed spoofing vulnerability in Microsoft Exchange Server is ratcheting up urgency for enterprise security teams, even as technical specifics remain locked behind Microsoft’s...
Microsoft Drops Limited Details on CVE-2025-25006 Exchange Spoofing Bug—Here’s How to Protect Your Network
Microsoft has posted a new Exchange Server vulnerability, CVE-2025-25006, with a terse description that points to a spoofing weakness in how the mail server handles special header elements. The...
CVE-2025-33051: Exchange Server Leak Demands Urgent Patching and Credential Rotation
Microsoft’s June 2025 Patch Tuesday has surfaced CVE-2025-33051, an information disclosure vulnerability in Exchange Server that demands immediate attention from every organization running...
CISA Mandates Immediate Disconnect of EOL Exchange Servers After Black Hat Exploit Demo for CVE-2025-53786
A critical Microsoft Exchange Server vulnerability now carries a binding directive from the U.S. Cybersecurity and Infrastructure Security Agency, following a live demonstration of the exploit at the...
CISA Orders Emergency Fix for Exchange Hybrid Bug Allowing 'Total Domain Compromise'
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has issued an emergency directive requiring federal agencies to patch a severe Microsoft Exchange vulnerability by August 11, warning...
CISA Sets August 11 Deadline for Critical Exchange Hybrid Patch as Exploits Emerge
The U.S. Cybersecurity and Infrastructure Security Agency issued Emergency Directive 25-02 on August 7, 2025, giving federal agencies fewer than four days to remediate a high-severity vulnerability...
Exchange Hybrid Bug Lets Attackers Quietly Escalate to Cloud Admin — Patch Now
A single compromise on a dusty, overlooked Exchange Server can now silently hand an attacker the keys to your entire Microsoft 365 kingdom — with no alarm raised and no audit trail left behind....
CISA Orders Federal Agencies to Patch Critical Exchange Hybrid Flaw by August 11
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) issued an emergency directive on Friday mandating all federal agencies with Microsoft Exchange hybrid environments to patch a critical...
CVE-2025-53786: How a Hybrid Exchange Flaw Turns On-Prem Access into Cloud Catastrophe
Attackers who manage to breach an on-premises Microsoft Exchange server can now pivot to the cloud with a set of unrevocable credentials—and for 24 hours, defenders are all but helpless. That is...
CVE-2025-53786: The Silent Hybrid Exchange Exploit That Bypasses All Cloud Defenses
Microsoft has issued an urgent warning about a high-severity vulnerability in hybrid Exchange deployments that could let attackers who breach an on-premises server silently escalate their privileges...
The 2025 Email Security Shift: Why Proofpoint, Mimecast, and Others Are Replacing Microsoft EOP
Microsoft Exchange Online Protection (EOP) has been the default email security gatekeeper for millions of businesses, but in 2025, a growing number of organizations are finding its basic defenses...
Exchange Hybrid Attack Turns On-Prem Admin into Cloud Hijacker: CVE-2025-53786 Exposes Identity Perimeter Crisis
A single compromised on-premises Exchange administrator can now seize control of an organization’s entire Microsoft 365 cloud—for up to 24 hours, with virtually no audit trail. That is the urgent...