CVE-2026-33102

critical Microsoft
CVSS v3 Base Score
9.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
EPSS Score
0.0%
Exploitation probability in 30 days
Top 86% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Confidentiality
High
Integrity
High
Availability
None
Published: April 23, 2026 (20 days ago)
Last Modified: April 29, 2026
Vendor: Microsoft
Source: NVD

Description

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

CWE

CWE-601

Affected Products

microsoft 365 copilot

References

🔗 msrc.microsoft.com