CVE-2026-21520

Summary

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

Affected Software

Weaknesses

• CWE-77: CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: total

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21520

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