A year-old proof-of-concept attack that allows an attacker to bypass TLS email protections to snoop on messages has been patched.
https://threatpost.com/email-bug-message-snooping-credential-theft/167125/
Microsoft Releases Emergency Patch for PrintNightmare Bugs
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The fix doesn’t cover the entire problem nor all affected systems however, so the company also is offering workarounds and plans to release further remedies at a later date.
https://threatpost.com/microsoft-emergency-patch-printnightmare/167578/