Tuesday 9 September 2025
September 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.
Evidence incomplete
September 2025: public evidence is incomplete.
The CVEs it fixes are unknown; no open known issues found in the current public evidence; out-of-band fixes followed on 22 Sep.
MSRC's September 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
- 1
Release calendar · August 2022
Mon 1 Aug
Tue 2 Aug
Wed 3 Aug
Thu 4 Aug
Fri 5 Aug
Sat 6 Aug
Sun 7 Aug
Mon 8 Aug
Tue 9 Aug
Wed 10 Aug
Thu 11 Aug
Fri 12 Aug
Sat 13 Aug
Sun 14 Aug
Mon 15 Aug
Tue 16 Aug
Wed 17 Aug
Thu 18 Aug
Fri 19 Aug
Sat 20 Aug
Sun 21 Aug
Mon 22 Aug
Tue 23 Aug
Wed 24 Aug
Thu 25 Aug
Fri 26 Aug
Sat 27 Aug
Sun 28 Aug
Mon 29 Aug
Tue 30 Aug
Wed 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