What are the key points?

Microsoft resolved three critical information disclosure vulnerabilities in its 365 Copilot service. The security flaws were identified and fully remediated on May 7, 2026. No action is required from end users or administrators to implement the fix.

Microsoft 365 Copilot Vulnerabilities Patched

•Microsoft resolved three critical information disclosure vulnerabilities in its 365 Copilot service.
•The security flaws were identified and fully remediated on May 7, 2026.
•No action is required from end users or administrators to implement the fix.

Microsoft has addressed three critical security vulnerabilities discovered within its Microsoft 365 Copilot and Copilot Chat products. These flaws were classified as information disclosure vulnerabilities, meaning they could have potentially exposed sensitive data.

The company officially reported that all three issues were fully remediated on May 7, 2026. Because the patches were applied directly by Microsoft, neither end users nor corporate administrators need to take any action to secure their systems.

Microsoft has addressed three critical security vulnerabilities discovered within its Microsoft 365 Copilot and Copilot Chat products. These flaws were classified as information disclosure vulnerabilities, meaning they could have potentially exposed sensitive data.

The company officially reported that all three issues were fully remediated on May 7, 2026. Because the patches were applied directly by Microsoft, neither end users nor corporate administrators need to take any action to secure their systems.