Description
Exposure of Sensitive Information to an Unauthorized Actor in Copilot Studio allows a unauthenticated attacker to view sensitive information through network attack vector
Published: 2026-01-22
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: Information Disclosure
Action: Apply Patch
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Thu, 26 Feb 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

ssvc

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


Mon, 02 Feb 2026 13:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:microsoft:copilot_studio:-:*:*:*:*:*:*:*

Fri, 23 Jan 2026 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


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

Type Values Removed Values Added
Description Exposure of Sensitive Information to an Unauthorized Actor in Copilot Studio allows a unauthenticated attacker to view sensitive information through network attack vector
Title Copilot Studio Information Disclosure Vulnerability
First Time appeared Microsoft
Microsoft copilot Studio
Weaknesses CWE-77
CPEs cpe:2.3:a:microsoft:copilot_studio:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft copilot Studio
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C/CR:H/IR:L/AR:L'}


Subscriptions

Microsoft Copilot Studio
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-04-01T13:49:22.726Z

Reserved: 2025-12-30T18:10:54.846Z

Link: CVE-2026-21520

cve-icon Vulnrichment

Updated: 2026-01-23T20:06:07.593Z

cve-icon NVD

Status : Analyzed

Published: 2026-01-22T23:15:57.657

Modified: 2026-02-02T13:31:19.580

Link: CVE-2026-21520

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-16T07:45:06Z

Weaknesses