MicrosoftRadar Independent status for Microsoft services

Microsoft Dataverse Elevation of Privilege Vulnerability

CVE-2026-77903 is an elevation of privilege vulnerability in Microsoft Dataverse (rated Critical, CVSS 9.0). Microsoft fixed it in the service; customers need to do nothing.

1 version

Facts

Microsoft id
CVE-2026-77903
Products
Microsoft Dataverse
Severity
Critical
Impact
Elevation of Privilege
CVSS
9.0
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
Exploited
No
Publicly disclosed
No
Customer action required
No
Release
2026-Sep
Assigned by
Microsoft
Weakness
CWE-290: Authentication Bypass by Spoofing
MSRC revision
1.0
Status pages
Power Apps status
First captured by us
(from our first import of this list)
Microsoft last modified
Source
Security updates · open the original at Microsoft

Microsoft's revision notes

  1. Revision 1.0, 2026-09-17: Information published.

Microsoft says

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

Security updates,

Read Microsoft's full post

What Microsoft changed

One version so far. If Microsoft edits it, each change shows here with what was removed and added.

  1. First version we captured ·

    The text as we first saw it

    Seen by us · Microsoft's timestamp · Microsoft's page

Other changes for Power Apps

Last updated