Microsoft Microsoft 365 Copilot's Business Chat

• CVE-2026-78501 High 8.6 Microsoft 365 Copilot Business Chat Information Disclosure Vulnerability 0.5%
• CVE-2026-26129 High 7.5 M365 Copilot Information Disclosure Vulnerability 1.1%
• CVE-2026-26164 High 7.5 M365 Copilot Information Disclosure Vulnerability 0.8%
• CVE-2025-59286 Critical 9.3 Copilot Information Disclosure Vulnerability 0.6%
• CVE-2025-59272 Critical 9.3 Copilot Information Disclosure Vulnerability 0.6%
• CVE-2025-53787 High 8.2 Microsoft 365 Copilot BizChat Information Disclosure Vulnerability 0.7%
• CVE-2025-53774 Medium 6.5 Microsoft 365 Copilot BizChat Information Disclosure Vulnerability 0.6%