Tuesday 13 May 2025
May 2025: 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Superseded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 2025.
The CVEs it fixes are unknown; no open known issues found in the current public evidence; out-of-band fixes followed on 19 May, 23 May, 27 May, 31 May. See November 2026 Patch Tuesday.
MSRC's May 2025 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
- 6
Release calendar · May 2028
Mon 1 May
Tue 2 May
Wed 3 May
Thu 4 May
Fri 5 May
Sat 6 May
Sun 7 May
Mon 8 May
Tue 9 May
Wed 10 May
Thu 11 May
Fri 12 May
Sat 13 May
Sun 14 May
Mon 15 May
Tue 16 May
Wed 17 May
Thu 18 May
Fri 19 May
Sat 20 May
Sun 21 May
Mon 22 May
Tue 23 May
Wed 24 May
Thu 25 May
Fri 26 May
Sat 27 May
Sun 28 May
Mon 29 May
Tue 30 May
Wed 31 May
Patch Tuesday and security (B) releasesPreview (D) releasesOut-of-band releases.NET Framework servicing packagesEdge, Office, Teams, Defender and server releasesAll product versions