Improper validation of specified type of input 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

Fri, 23 Jan 2026 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 22 Jan 2026 23:00:00 +0000

Type Values Removed Values Added
Description Improper validation of specified type of input 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-1287
CPEs cpe:2.3:a:microsoft:365_copilot:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft 365 Copilot
References
Metrics cvssV3_1

{'score': 9.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-01-23T13:41:57.617Z

Reserved: 2026-01-21T21:28:02.969Z

Link: CVE-2026-24307

cve-icon Vulnrichment

Updated: 2026-01-23T13:41:54.831Z

cve-icon NVD

Status : Received

Published: 2026-01-22T23:15:59.003

Modified: 2026-01-22T23:15:59.003

Link: CVE-2026-24307

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses