CVE-2026-21520

HIGH

7.5

Description

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

Details CVE

Score CVSS v3.17.5

SeveriteHIGH

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie1/22/2026

Derniere modification2/2/2026

Sourcenvd

Observations honeypot0

Produits affectes

microsoft:copilot_studio

Faiblesses (CWE)

CWE-77

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21520(secure@microsoft.com)

Correlations IOC

Aucune correlation enregistree

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