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Superseded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 · June 2028

Thu 1 Jun

Fri 2 Jun

Sat 3 Jun

Sun 4 Jun

Mon 5 Jun

Tue 6 Jun

Wed 7 Jun

Thu 8 Jun

Fri 9 Jun

Sat 10 Jun

Sun 11 Jun

Mon 12 Jun

Tue 13 Jun

Patch Tuesday

Wed 14 Jun

Thu 15 Jun

Fri 16 Jun

Sat 17 Jun

Sun 18 Jun

Mon 19 Jun

Tue 20 Jun

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Thu 22 Jun

Fri 23 Jun

Sat 24 Jun

Sun 25 Jun

Mon 26 Jun

Tue 27 Jun

Wed 28 Jun

Thu 29 Jun

Fri 30 Jun

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