CVE-2026-33102
CRITICALMicrosoft 365 Copilot Elevation of Privilege Vulnerability
Title source: cnaDescription
Url redirection to untrusted site ('open redirect') in M365 Copilot allows an unauthorized attacker to elevate privileges over a network.
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
patch
Microsoft 365 Copilot Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33102
Scores
CVSS v3
9.3
EPSS
0.0039
EPSS Percentile
30.6%
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-601
Status
published
Products (2)
microsoft/365_copilot
Microsoft/Microsoft 365 Copilot
-
Published
Apr 23, 2026
Tracked Since
Apr 24, 2026