Description
AI command injection in M365 Copilot allows an unauthorized attacker to disclose information over a network.
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
patch
M365 Copilot Information Disclosure Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26133
Scores
CVSS v3
7.1
EPSS
0.0005
EPSS Percentile
17.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-77
Status
published
Products (38)
microsoft/365_copilot
< 16.0.19815.10000
microsoft/365_copilot
< 2.107.2
microsoft/edge
< 145.3800.99 (2 CPE variants)
microsoft/excel
< 16.0.19822.20038
microsoft/excel
< 2.106.2
microsoft/loop
< 2.106
Microsoft/Microsoft 365 Copilot for Android
1.0 - 16.0.19815.10000
Microsoft/Microsoft 365 Copilot for iOS
1.0 - 2.107.2
Microsoft/Microsoft Edge for Android
1.0.0 - 145.3800.99
Microsoft/Microsoft Edge for iOS
1.0.0.0 - 145.3800.99
... and 28 more
Published
Mar 16, 2026
Tracked Since
Mar 16, 2026