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Superseded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 · February 2030

Fri 1 Feb

Sat 2 Feb

Sun 3 Feb

Mon 4 Feb

Tue 5 Feb

Wed 6 Feb

Thu 7 Feb

Fri 8 Feb

Sat 9 Feb

Sun 10 Feb

Mon 11 Feb

Tue 12 Feb

Patch Tuesday

Wed 13 Feb

Thu 14 Feb

Fri 15 Feb

Sat 16 Feb

Sun 17 Feb

Mon 18 Feb

Tue 19 Feb

Wed 20 Feb

Thu 21 Feb

Fri 22 Feb

Sat 23 Feb

Sun 24 Feb

Mon 25 Feb

Tue 26 Feb

Wed 27 Feb

Thu 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