CVE-2026-47645
Microsoft 365 Copilot's Business Chat Elevation of Privilege vulnerability
Microsoft·Microsoft 365 Copilot's Business Chat Elevation of Privilege
MSRC advisory June 18, 2026
Alert details
- Source feed
- Microsoft MSRC
- CVE ID
- CVE-2026-47645
- Affected products
- Microsoft 365 Copilot's Business Chat Elevation of Privilege · Microsoft Microsoft 365 Copilot's Business Chat Elevation of Privilege · Microsoft
What happened
Url redirection to untrusted site ('open redirect') in Microsoft 365 Copilot's Business Chat allows an unauthorized attacker to elevate privileges over a network.
What it means for your business
Microsoft 365 Copilot's Business Chat Elevation of Privilege vulnerability (CVE-2026-47645) was added to Microsoft’s security update guidance. Url redirection to untrusted site ('open redirect') in Microsoft 365 Copilot's Business Chat allows an unauthorized attacker to elevate privileges over a network. PremierePC tracks MSRC advisories for Upstate SC businesses — patch or open a ticket if you need help verifying exposure.
Sources
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