CERT/CC Reports Microsoft Exchange 2013 and Newer are Vulnerable to NTLM Relay Attacks

The CERT Coordination Center (CERT/CC) has released information to address NTLM relay attacks affecting Microsoft Exchange 2013 and newer versions. A remote attacker could exploit this vulnerability to take control of an affected system.

The National Cybersecurity and Communications Integration Center (NCCIC), part of the Cybersecurity and Infrastructure Security Agency (CISA), encourages users and administrators to review CERT/CC’s Vulnerability Note VU#465632 and consider the listed workarounds until patches are made available.

This product is provided subject to this Notification and this Privacy & Use policy.

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