CVE-2026-33102

CRITICAL

Microsoft 365 Copilot Elevation of Privilege Vulnerability

Title source: cna

Description

Url redirection to untrusted site ('open redirect') in M365 Copilot allows an unauthorized attacker to elevate privileges over a network.

References (1)

Scores

CVSS v3 9.3
EPSS 0.0004
EPSS Percentile 13.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Details

CWE
CWE-601
Status published
Products (1)
Microsoft/Microsoft 365 Copilot -
Published Apr 23, 2026
Tracked Since Apr 24, 2026