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AI / ML CVE-2026-21520

HIGH
Command Injection (CWE-77)
2026-01-22 secure@microsoft.com
7.5
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
CVE Published
Jan 22, 2026 - 23:15 nvd
HIGH 7.5

DescriptionCVE.org

Exposure of Sensitive Information to an Unauthorized Actor in Copilot Studio allows a unauthenticated attacker to view sensitive information through network attack vector

AnalysisAI

Unauthenticated attackers can remotely access sensitive information in Microsoft Copilot Studio due to improper access controls, requiring no authentication or user interaction. This network-based vulnerability exposes confidential data to unauthorized disclosure with no patch currently available.

Technical ContextAI

Classified as CWE-77 (Command Injection). Affects Copilot Studio. Exposure of Sensitive Information to an Unauthorized Actor in Copilot Studio allows a unauthenticated attacker to view sensitive information through network attack vector

RemediationAI

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

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CVE-2026-21520 vulnerability details – vuln.today

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