Microsoft Dataverse Elevation of Privilege Vulnerability (Microsoft Microsoft Dataverse)

CVE-2026-77903

CRITICAL 9.0

At a glance

Source: NVD
EPSS: EPSS 0.37 % · percentile 31 (2026-11-01)
State: PUBLISHED
Published: 2026-09-17 22:55 UTC
Updated: 2026-10-31 16:09 UTC
Assigner: microsoft
NVD status: Analyzed

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Description

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

Weaknesses (CWE)

CWE-290 — Authentication Bypass by Spoofing

References

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

Scores

Version	Score	Vector	Scored by
CVSS 3.1	CRITICAL 9.0	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	microsoft
CVSS 3.1	CRITICAL 9.0	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H	NVD · secure@microsoft.com (Secondary)
CVSS 3.1	HIGH 8.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	NVD · nvd@nist.gov (Primary)

European references

ENISA EUVD · EUVD-2026-82585
GCVE · GCVE-0-2026-77903

Affected configurations (NVD CPE)

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

Affected products

Product	Versions
Microsoft · Microsoft Dataverse	affected -

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD