Tuesday 8 December 2020
December 2020: is it safe to deploy?
What Microsoft fixed, how urgent it is, and whether anything broke, per Windows version, from Microsoft's release tables, release health, MSRC, CISA, and what the community reports.
Evidence incomplete
December 2020: public evidence is incomplete.
The CVEs it fixes are unknown; no open known issues found in the current public evidence.
MSRC's December 2020 security update document isn't collected.
ChangeIntel's reading of public signals, not advice; check Microsoft's guidance and test before you deploy. Terms
- Microsoft CVEs
- Unknown
- Exploited fixed
- Unknown
- In CISA KEV
- Unknown
- Open known issues
- 0
- Out-of-band
- 0
Release calendar · June 2026
Mon 1 Jun
Tue 2 Jun
Wed 3 Jun
Thu 4 Jun
Fri 5 Jun
Sat 6 Jun
Sun 7 Jun
Mon 8 Jun
Tue 9 Jun
- Patch Tuesday
- KB5094122 · Win 10 1607, Server 2016
- KB5094123 · Win 10 1809, Server 2019
+12 more
- KB5094127 · Win 10 21H2, Win 10 22H2
- KB5093998 · Win 11 23H2
- KB5094126 · Win 11 24H2, Win 11 25H2
- KB5095051 · Win 11 26H1
- KB5094128 · Server 2022
- KB5094125 · Server 2025
- Microsoft 365 Apps 17932.20842
- Exchange Server SE 15.2.2562.43
- Exchange Server 2016 15.1.2507.69
- SharePoint Server Subscription Edition 16.0.19725.20384
- SharePoint Server 2019 16.0.10417.20153
- SharePoint Server 2016 16.0.5556.1005
Wed 10 Jun
Thu 11 Jun
Fri 12 Jun
Sat 13 Jun
Sun 14 Jun
Mon 15 Jun
Tue 16 Jun
Wed 17 Jun
Thu 18 Jun
Fri 19 Jun
Sat 20 Jun
Sun 21 Jun
Mon 22 Jun
Wed 24 Jun
Thu 25 Jun
Fri 26 Jun
Sat 27 Jun
Sun 28 Jun
Mon 29 Jun
Tue 30 Jun
Patch Tuesday and security (B) releasesPreview (D) releasesOut-of-band releases.NET Framework servicing packagesEdge, Office, Teams, Defender and server releasesAll product versions