CVE-2026-47645 PUBLISHED

Microsoft 365 Copilot's Business Chat Elevation of Privilege Vulnerability

Assigner: microsoft
Reserved: 19.05.2026 Published: 19.06.2026 Updated: 19.06.2026

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

Metrics

CVSS Vector: 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
CVSS Score: 8.8

Product Status

Vendor Microsoft
Product Microsoft 365 Copilot
Versions
  • Version - is affected

References

Problem Types