MC1486397

An updated version of the September 2026 Scan Cab is available

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Major Update: This post contains a significant change that may impact your organisation.

IMPORTANT: This notice is only relevant for environments where:

  • Exchange Server Subscription Edition (SE) is used
  • Scan Cab is used to check for update compliance
  • The September 2026 Scan Cab was deployed before 6:30 PM PDT on October 2, 2026.

What and why

An updated version of the September 2026 Scan Cab was made available at 6:30 PM PDT on October 2, 2026. This Scan Cab includes new metadata corresponding to new updates for Exchange Server.

The new Microsoft update for Exchange Server released October 2, 2026, included additional protections to address CVE-2026-96940: Exchange Server Elevation of Privilege Vulnerability. See the additional information section of this message for details.

Rollout schedule

The updated September 2026 Scan Cab was made available at 6:30 PM PDT on October 2, 2026.

Who is affected

IT administrators who downloaded the Scan Cab before 6:30 PM PDT on October 2, 2026, should re-acquire and re-deploy it if the Scan Cab is used to assess updates for environments where Exchange Server is used.

No action is required on environments where Scan Cab is not employed and do not have Exchange Server. However, please note that there might be non-Microsoft applications that utilize Scan Cab. Review the documentation for any software and update deployment tools that might be in use for your organization, to understand if this is applicable in your environment.

What will happen

Administrators can re-deploy the updated Scan Cab via their usual processes. For detailed guidance, see the Additional information section below.

Additional information