CVE-2026-54130 | Microsoft M365 Copilot missing authentication

June 19, 2026 Yanac

A vulnerability categorized as critical has been discovered in Microsoft M365 Copilot. This issue affects some unknown processing. Executing a manipulation can lead to missing authentication.

This vulnerability is registered as CVE-2026-54130. It is possible to launch the attack remotely. No exploit is available.

This product is a managed service, so users do not have direct control over vulnerability countermeasures.VulDB Recent EntriesRead More