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Superseded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 2028

Sat 1 Jan

Sun 2 Jan

Mon 3 Jan

Tue 4 Jan

Wed 5 Jan

Thu 6 Jan

Fri 7 Jan

Sat 8 Jan

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Mon 10 Jan

Tue 11 Jan

Patch Tuesday

Wed 12 Jan

Thu 13 Jan

Fri 14 Jan

Sat 15 Jan

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Mon 17 Jan

Tue 18 Jan

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Thu 20 Jan

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Fri 28 Jan

Sat 29 Jan

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Mon 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