Description
Improper validation of specified type of input in M365 Copilot allows an unauthorized attacker to disclose information over a network.
Scores
CVSS v3
9.3
EPSS
0.0013
EPSS Percentile
31.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-1287
Status
published
Products (2)
microsoft/365_copilot
Microsoft/Microsoft 365 Copilot
-
Published
Jan 22, 2026
Tracked Since
Feb 18, 2026