Tuesday 13 October 2026
October 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Superseded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 October 2026.
Microsoft fixed 1474 CVEs, 94 critical and 1 exploited; 1 known issue is still open; out-of-band fixes followed on 26 Oct. See November 2026 Patch Tuesday.
59 of these CVEs were added after 13 Oct 2026; the release-day timeline keeps the original publication dates.
ChangeIntel's reading of public signals, not advice; check Microsoft's guidance and test before you deploy. Terms
Release calendar · November 2022
Tue 1 Nov
Wed 2 Nov
Thu 3 Nov
Fri 4 Nov
Sat 5 Nov
Sun 6 Nov
Mon 7 Nov
Tue 8 Nov
Wed 9 Nov
Thu 10 Nov
Fri 11 Nov
Sat 12 Nov
Sun 13 Nov
Mon 14 Nov
Wed 16 Nov
Thu 17 Nov
Fri 18 Nov
Sat 19 Nov
Sun 20 Nov
Mon 21 Nov
Tue 22 Nov
Wed 23 Nov
Thu 24 Nov
Fri 25 Nov
Sat 26 Nov
Sun 27 Nov
Mon 28 Nov
Tue 29 Nov
Wed 30 Nov
Patch Tuesday and security (B) releasesPreview (D) releasesOut-of-band releases.NET Framework servicing packagesEdge, Office, Teams, Defender and server releasesAll product versions