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 · September 2025
Mon 1 Sep
Tue 2 Sep
Wed 3 Sep
Thu 4 Sep
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Sun 7 Sep
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Tue 30 Sep
Patch Tuesday and security (B) releasesPreview (D) releasesOut-of-band releases.NET Framework servicing packagesEdge, Office, Teams, Defender and server releasesAll product versions