Tuesday 13 January 2026
January 2026: 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.
Superseded
Newer updates replace January 2026.
The CVEs it fixes are unknown; no open known issues found in the current public evidence; out-of-band fixes followed on 17 Jan, 24 Jan. See November 2026 Patch Tuesday.
MSRC's January 2026 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
- 12
Release calendar · February 2026
Sun 1 Feb
Mon 2 Feb
Tue 3 Feb
Wed 4 Feb
Thu 5 Feb
Fri 6 Feb
Sat 7 Feb
Sun 8 Feb
Mon 9 Feb
Tue 10 Feb
Wed 11 Feb
Thu 12 Feb
Fri 13 Feb
Sat 14 Feb
Sun 15 Feb
Mon 16 Feb
Tue 17 Feb
Wed 18 Feb
Thu 19 Feb
Fri 20 Feb
Sat 21 Feb
Sun 22 Feb
Mon 23 Feb
Wed 25 Feb
Thu 26 Feb
Fri 27 Feb
Sat 28 Feb
Patch Tuesday and security (B) releasesPreview (D) releasesOut-of-band releases.NET Framework servicing packagesEdge, Office, Teams, Defender and server releasesAll product versions