Published October 21, 2026
The vulnerability associated with this CVE was fixed in July, however was inadvertently not included with that release. Microsoft recommends updating to the most current release of the SharePoint server.
Published October 20, 2026
Updated CVE to relect that this vulnerability is in the Windows Subsystem for Linux product. Microsoft recommends that customer using this product should install the latest version to be protected.
Published October 20, 2026
Updated an acknowledgement. This is an informational change only.
Published October 20, 2026
Updated an acknowledgement. This is an informational change only.
Published October 20, 2026
Updated an acknowledgement. This is an informational change only.
Published October 20, 2026
Updated an acknowledgement. This is an informational change only.
Published October 20, 2026
Updated an acknowledgement. This is an informational change only.
Published October 19, 2026
Updated the Security Updates table to list Microsoft Identity Web v3 and v4 separately and clarify the affected version ranges. The existing security updates are versions 3.16.0 and 4.16.1, respectively. This is an informational change only.
Published October 19, 2026
Microsoft is aware that the vulnerability for which this CVE was assigned has not been addressed. We are working to prepare and test a complete mitigation. We will update this document when there is more information.
Published October 16, 2026
This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](https://chromereleases.googleblog.com/2026) for more information.