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.

← Sep 2026 Nov 2026 →

Superseded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

Microsoft CVEs: 1474
Critical: 94
Exploited fixed: 1
In CISA KEV: 1
Open known issues: 1
Out-of-band: 8

Release calendar · January 2029

Mon 1 Jan

Tue 2 Jan

Wed 3 Jan

Thu 4 Jan

Fri 5 Jan

Sat 6 Jan

Sun 7 Jan

Mon 8 Jan

Tue 9 Jan

Patch Tuesday

Wed 10 Jan

Thu 11 Jan

Fri 12 Jan

Sat 13 Jan

Sun 14 Jan

Mon 15 Jan

Tue 16 Jan

Wed 17 Jan

Thu 18 Jan

Fri 19 Jan

Sat 20 Jan

Sun 21 Jan

Mon 22 Jan

Tue 23 Jan

Wed 24 Jan

Thu 25 Jan

Fri 26 Jan

Sat 27 Jan

Sun 28 Jan

Mon 29 Jan

Tue 30 Jan

Wed 31 Jan

Patch Tuesday and security (B) releasesPreview (D) releasesOut-of-band releases.NET Framework servicing packagesEdge, Office, Teams, Defender and server releasesAll product versions