Microsoft Patches Three Critical Information Disclosure Vulnerabilities in Microsoft 365 Copilot and Edge
Microsoft has disclosed and fully remediated three critical information disclosure vulnerabilities — CVE-2026-26129, CVE-2026-26164, and CVE-2026-33111 — affecting Microsoft 365 Copilot and Copilot Chat in Microsoft Edge. All three flaws were patched server-side on May 7, 2026, requiring no action from end users, but they highlight the growing attack surface of AI-powered productivity tools with broad enterprise data access.
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