CVE-2026-47645
Microsoft 365 Copilot's Business Chat Elevation of Privilege Vulnerability
- State
- Published
- Severity
- 8.8 High
- Published
- Jun 19, 2026
- Updated
- Sep 24, 2026
- Reserved
- May 19, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.8 High | 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 | microsoft |
Weaknesses
- CWE-601 URL Redirection to Untrusted Site ('Open Redirect')
Affected Products
| Product | Versions |
|---|---|
Microsoft 365 CopilotMicrosoft |
|
References
- Microsoft 365 Copilot's Business Chat Elevation of Privilege Vulnerabilityvendor-advisorypatch
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.