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Superseded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 2030

Tue 1 Jan

Wed 2 Jan

Thu 3 Jan

Fri 4 Jan

Sat 5 Jan

Sun 6 Jan

Mon 7 Jan

Tue 8 Jan

Patch Tuesday

Wed 9 Jan

Thu 10 Jan

Fri 11 Jan

Sat 12 Jan

Sun 13 Jan

Mon 14 Jan

Tue 15 Jan

Wed 16 Jan

Thu 17 Jan

Fri 18 Jan

Sat 19 Jan

Sun 20 Jan

Mon 21 Jan

Tue 22 Jan

Wed 23 Jan

Thu 24 Jan

Fri 25 Jan

Sat 26 Jan

Sun 27 Jan

Mon 28 Jan

Tue 29 Jan

Wed 30 Jan

Thu 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