CVE-2026-47645
Microsoft 365 Copilot's Business Chat Elevation of Privilege Vulnerability
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
Url redirection to untrusted site ('open redirect') in Microsoft 365 Copilot's Business Chat allows an unauthorized attacker to elevate privileges over a network.
| Vendor | microsoft |
| Product | microsoft 365 copilot |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | Jun 19, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Microsoft / Microsoft 365 Copilot
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