CVE-2026-26133

HIGH

7.1

Description

AI command injection in M365 Copilot allows an unauthorized attacker to disclose information over a network.

CVE Details

CVSS v3.1 Score7.1

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published3/16/2026

Last Modified4/7/2026

Sourcenvd

Honeypot Sightings0

Affected Products

microsoft:365_copilotmicrosoft:edgemicrosoft:excelmicrosoft:loopmicrosoft:onenotemicrosoft:outlookmicrosoft:power_bimicrosoft:powerpointmicrosoft:teamsmicrosoft:word

Weaknesses (CWE)

CWE-77

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26133(secure@microsoft.com)

IOC Correlations

No correlations recorded

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