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Superseded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 · July 2031

Tue 1 Jul

Wed 2 Jul

Thu 3 Jul

Fri 4 Jul

Sat 5 Jul

Sun 6 Jul

Mon 7 Jul

Tue 8 Jul

Patch Tuesday

Wed 9 Jul

Thu 10 Jul

Fri 11 Jul

Sat 12 Jul

Sun 13 Jul

Mon 14 Jul

Tue 15 Jul

Wed 16 Jul

Thu 17 Jul

Fri 18 Jul

Sat 19 Jul

Sun 20 Jul

Mon 21 Jul

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Wed 23 Jul

Thu 24 Jul

Fri 25 Jul

Sat 26 Jul

Sun 27 Jul

Mon 28 Jul

Tue 29 Jul

Wed 30 Jul

Thu 31 Jul

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