Exchange Authentication Bypass Vulnerability Now Exploitable

A public exploit for an Exchange authentication bypass vulnerability is live, and 85% of German on-prem servers remain unpatched, BSI warns.

A working exploit for an Exchange authentication bypass vulnerability is now public on GitHub, and heise.de reports that roughly 85% of on-premises Exchange servers in Germany remain vulnerable three weeks after Microsoft shipped a fix. The catch: for organizations still running Exchange 2016 or 2019, that fix is locked behind Microsoft’s paid Extended Security Update…

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