Plan
archived
Microsoft Exchange 2016/2019 ESU ends October 2026
- Engineer — Plan: If you still run Exchange 2016 or 2019 on-premises, schedule migration to Exchange Online or a supported version before October; after that date, unpatched RCE vulnerabilities will go unfixed on a historically targeted mail server.
- SOC/IR — Skip
- Leader — Plan: Confirm whether on-premises Exchange 2016/2019 remains in the estate; EOL removes the vendor’s security backstop and raises audit/compliance risk — budget and timeline for migration or decommission should be locked this quarter.
This entry was curated and judged by AI (Claude) with automated enrichment
(CISA KEV / EPSS / public PoC). Verify against the original source before
acting. Found a bad verdict?
Report it —
confirmed errors go to the corrections log.