Tuesday 12 May 2026

May 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.

← Apr 2026 Jun 2026 →

Superseded

Newer updates replace May 2026.

The CVEs it fixes are unknown; no open known issues found in the current public evidence. See November 2026 Patch Tuesday.

MSRC's May 2026 security update document isn't collected.

ChangeIntel's reading of public signals, not advice; check Microsoft's guidance and test before you deploy. Terms

Microsoft CVEs: Unknown
Exploited fixed: Unknown
In CISA KEV: Unknown
Open known issues: 0
Out-of-band: 0

Release calendar · January 2022

Sat 1 Jan

Sun 2 Jan

Mon 3 Jan

Tue 4 Jan

KB5010196 · Win 10 1809, Server 2019

Wed 5 Jan

Thu 6 Jan

Fri 7 Jan

Sat 8 Jan

Sun 9 Jan

Mon 10 Jan

Tue 11 Jan

Wed 12 Jan

Thu 13 Jan

Fri 14 Jan

Sat 15 Jan

Sun 16 Jan

Mon 17 Jan

Tue 18 Jan

KB5010791 · Win 10 1809, Server 2019

Wed 19 Jan

Thu 20 Jan

Fri 21 Jan

Sat 22 Jan

Sun 23 Jan

Mon 24 Jan

Tue 25 Jan

Wed 26 Jan

Thu 27 Jan

Fri 28 Jan

Sat 29 Jan

Sun 30 Jan

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