Microsoft just released patches for four Exchange Server vulns that the NSA disclosed to it: https://t.co/OYqjDtR2E6https://t.co/t5geGldHmRhttps://t.co/i80eyaHbjDhttps://t.co/9cU5T3iDGJhttps://t.co/Sdi2VfAAFh

MSFT says no evidence yet of exploitation but urges patching.

— Eric Geller (@ericgeller) April 13, 2021