Microsoft September Monthly Updates - 2026090901¶
Overview¶
Microsoft have published their September Monthly Updates addressing 973 vulnerabilities, including multiple critical and known exploited items.
What is vulnerable?¶
Critical Severity¶
| Product(s) and Version(s) Affected | CVE | CVSS | Severity |
|---|---|---|---|
| Vendor listed affected items | CVE-2026-69730 | 9.8 | Critical |
| Vendor listed affected items | CVE-2026-69525 | 9.8 | Critical |
Known Exploitation¶
| Product(s) and Version(s) Affected | CVE | CVSS | Severity |
|---|---|---|---|
| Vendor listed affected items | CVE-2026-81963 | 7.8 | High |
| Vendor listed affected items | CVE-2026-85880 | 7.8 | High |
What has been observed?¶
Microsoft has detected exploitation of one or more mentioned vulnerabilities. The WASOC has not received any reports of exploitation of this vulnerability on Western Australian Government networks at the time of writing.
Recommendation¶
The WASOC recommends administrators apply the solutions as per vendor instructions to all affected devices within expected timeframes (refer Patch Management):
- Microsoft September Monthly Updates: https://msrc.microsoft.com/update-guide/releaseNote/2026-Sep