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Superseded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 2030

Tue 1 Jan

Wed 2 Jan

Thu 3 Jan

Fri 4 Jan

Sat 5 Jan

Sun 6 Jan

Mon 7 Jan

Tue 8 Jan

Patch Tuesday

Wed 9 Jan

Thu 10 Jan

Fri 11 Jan

Sat 12 Jan

Sun 13 Jan

Mon 14 Jan

Tue 15 Jan

Wed 16 Jan

Thu 17 Jan

Fri 18 Jan

Sat 19 Jan

Sun 20 Jan

Mon 21 Jan

Tue 22 Jan

Wed 23 Jan

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Fri 25 Jan

Sat 26 Jan

Sun 27 Jan

Mon 28 Jan

Tue 29 Jan

Wed 30 Jan

Thu 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