CVE-2026-47645

high Microsoft
CVSS v3 Base Score
8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score
0.4%
Exploitation probability in 30 days
Top 67% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Published: June 19, 2026 (20 days ago)
Last Modified: June 26, 2026
Vendor: Microsoft
Source: NVD

Description

Url redirection to untrusted site ('open redirect') in Microsoft 365 Copilot's Business Chat allows an unauthorized attacker to elevate privileges over a network.

CWE

CWE-601

Affected Products

microsoft 365 copilot

References

🔗 msrc.microsoft.com