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Superseded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 2031

Sun 1 Jun

Mon 2 Jun

Tue 3 Jun

Wed 4 Jun

Thu 5 Jun

Fri 6 Jun

Sat 7 Jun

Sun 8 Jun

Mon 9 Jun

Tue 10 Jun

Patch Tuesday

Wed 11 Jun

Thu 12 Jun

Fri 13 Jun

Sat 14 Jun

Sun 15 Jun

Mon 16 Jun

Tue 17 Jun

Wed 18 Jun

Thu 19 Jun

Fri 20 Jun

Sat 21 Jun

Sun 22 Jun

Mon 23 Jun

Tue 24 Jun

Wed 25 Jun

Thu 26 Jun

Fri 27 Jun

Sat 28 Jun

Sun 29 Jun

Mon 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