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.
Superseded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
Release calendar · August 2030
Thu 1 Aug
Fri 2 Aug
Sat 3 Aug
Sun 4 Aug
Mon 5 Aug
Tue 6 Aug
Wed 7 Aug
Thu 8 Aug
Fri 9 Aug
Sat 10 Aug
Sun 11 Aug
Mon 12 Aug
Tue 13 Aug
Wed 14 Aug
Thu 15 Aug
Fri 16 Aug
Sat 17 Aug
Sun 18 Aug
Mon 19 Aug
Tue 20 Aug
Wed 21 Aug
Thu 22 Aug
Fri 23 Aug
Sat 24 Aug
Sun 25 Aug
Mon 26 Aug
Tue 27 Aug
Wed 28 Aug
Thu 29 Aug
Fri 30 Aug
Sat 31 Aug
Patch Tuesday and security (B) releasesPreview (D) releasesOut-of-band releases.NET Framework servicing packagesEdge, Office, Teams, Defender and server releasesAll product versions