CVE-2026-26133

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

Score

CVSS 3.1 7.1 High

Status

Modified - secure@microsoft.com

Published

2026-03-16

Last modified

2026-06-19

Weaknesses

CWE-77

Affected products

• 365 Copilot (Microsoft)
• 365 Copilot Android (Microsoft)
• 365 Copilot IOS (Microsoft)
• Edge (Microsoft)
• Excel (Microsoft)
• Loop (Microsoft)
• Onenote (Microsoft)
• Onenote For Android (Microsoft)
• Onenote For Ios (Microsoft)
• Outlook (Microsoft)
• Outlook 2016 (Microsoft)
• Power Bi (Microsoft)
• Power Bi Android (Microsoft)
• Power Bi IOS (Microsoft)
• Powerpoint (Microsoft)
• Teams (Microsoft)
• Word (Microsoft)

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26133