CVE-2026-77903 CRITICAL 9.0

Published: 2026-09-17 23:18:44 UTC · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Categories: Windows

Authentication bypass by spoofing in Microsoft Dataverse allows an unauthorized attacker to elevate privileges over a network.

Weakness: CWE-290

Affected products

• cpe:2.3:a:microsoft:dataverse:-:*:*:*:*:*:*:*

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77903

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