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Microsoft 365 Copilot's Business Chat Elevation of Privilege Vulnerability

🗓️ 18 Jun 2026 14:00:00Reported by MicrosoftType 
mscve
 mscve
🔗 msrc.microsoft.com👁 45 Views

Open redirect in Microsoft 365 Copilot Business Chat enables privilege elevation via untrusted Uniform Resource Locator

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18 Jun 2026 14:00Current
7.7High risk
Vulners AI Score7.7
CVSS 3.18.8
EPSS0.00758
SSVC
45