Missing authentication for critical function in M365 Copilot allows an unauthorized attacker to disclose information over a network.
Advisories

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Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 22 Jun 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 18 Jun 2026 22:00:00 +0000

Type Values Removed Values Added
Description Missing authentication for critical function in M365 Copilot allows an unauthorized attacker to disclose information over a network.
Title M365 Copilot Information Disclosure Vulnerability
First Time appeared Microsoft
Microsoft 365 Copilot
Weaknesses CWE-306
CPEs cpe:2.3:a:microsoft:365_copilot:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft 365 Copilot
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-08-13T20:52:14.612Z

Reserved: 2026-06-11T20:33:37.837Z

Link: CVE-2026-54130

cve-icon Vulnrichment

Updated: 2026-06-22T18:34:51.259Z

cve-icon NVD

Status : Analyzed

Published: 2026-06-18T22:16:32.223

Modified: 2026-06-25T18:59:48.343

Link: CVE-2026-54130

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-24T20:30:04Z

Weaknesses