CVE-2026-77903

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

Score

CVSS 3.1 9.0 Critical

Status

Analyzed - secure@microsoft.com

Published

2026-09-17

Last modified

2026-10-26

Weaknesses

CWE-290

Affected products

• Dataverse (Microsoft)

References

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