Microsoft Critical Monthly Updates - 20260610001

Overview

Microsoft have published their Monthly Updates addressing multiple critical vulnerabilities.

What is vulnerable?

Critical Severity

Product(s) Affected and Versions	CVE	CVSS
Vendor listed products and versions	CVE-2026-26142	9.8
Vendor listed products and versions	CVE-2026-44815	9.8
Vendor listed products and versions	CVE-2026-45657	9.8
Vendor listed products and versions	CVE-2026-47291	9.8
Vendor listed products and versions	CVE-2026-47643	9.8
Vendor listed products and versions	CVE-2026-42904	9.6
Vendor listed products and versions	CVE-2026-47281	9.6
Vendor listed products and versions	CVE-2026-45602	9.1

What has been observed?

The WASOC has observed reports for one or more of the mentioned items being exploited in the wild. The WASOC has not received any reports of exploitation of these vulnerabilities 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 Security Updates: https://msrc.microsoft.com/update-guide/releaseNote/2026-Jun

Additional References

• TheEdvocate article: https://www.theedadvocate.org/microsofts-massive-june-patch-tuesday-what-you-need-to-know-now/

Change Log

• 2026-06-10: Initial publication.
• 2026-06-18: Added observations of exploitation in the wild.