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.
Superseded
Newer updates replace May 2026.
The CVEs it fixes are unknown; known-issue coverage is incomplete; security coverage is incomplete; Windows release coverage is incomplete. 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
- Unknown
- Out-of-band
- 0
Release calendar · January 2025
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Patch Tuesday and security (B) releasesPreview (D) releasesOut-of-band releases.NET Framework servicing packagesEdge, Office, Teams, Defender and server releasesAll product versions