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Microsoft Exchange Server Security – November 2021 Updates

The November 2021 security updates for Exchange Server address vulnerabilities reported by security partners and found through Microsoft’s internal processes. We are aware of limited targeted attacks in the wild using one of vulnerabilities (CVE-2021-42321), which is a post-authentication vulnerability in Exchange 2016 and 2019. Our recommendation is to install these updates immediately to protect your environment. For convenience, [...]

Exchange Protocol Guard – Software Release – EPG 3.6.1

Software Release - EPG 3.6.1 The following updates are now available now EPG 3.6.1  customers and trial users. Messageware EPG 2019 v3.6.1 Messageware EPG 2016 v3.6.1 Messageware EPG 2013 v3.6.1 Note: Prior to upgrading from 3.5 or earlier, make note of all entries in IP Filtering menu - Allow Lists tab. These IPs will need [...]

Microsoft Exchange Server Build Numbers and Release Dates

You can use the information in this article to verify the version of Exchange that is running in your organization. This article is organized in sections that correspond to the major releases of Exchange. Each section lists build numbers for each Service Pack (SP), Cumulative Update (CU), Security Update (SU), or Update Rollup (RU) of [...]

2021-07-13T10:59:30-04:00Microsoft Exchange|

Microsoft Exchange Server – May Patches – KB5003435 Security Update

A quick update to keep everyone informed on important Microsoft Exchange security updates: May 11, 2021 – Microsoft Exchange Server vulnerability – this time it is a security feature bypass and is one of the Exchange vulnerabilities that was found during PWN2OWN 2021. Microsoft has rated this as Exploitation Less Likely on the latest software [...]

Microsoft Exchange Server – April Patches – KB5001779 Security Update

A quick update to keep everyone informed on important Microsoft Exchange security updates: April 13, 2021 – Microsoft released new and urgent security updates for Exchange server 2019, 2016, 2013 covering four Remote Code vulnerabilities: […]

5 ways to protect Microsoft Exchange/Outlook Web from Brute Force, DoS

If Microsoft Exchange Server is your enterprise platform for email, you likely have also deployed Microsoft Exchange Outlook Web to enable employees to access email, calendars and contact information via mobile devices and web browsers. Making Outlook Web (OWA) available reduces IT costs and encourages user productivity, but it also creates additional security risks. Exposing [...]