Microsoft Copilot Chat vulnerabilities

• microsoft 365 copilot's business chat, 365 copilot chat +1 more Microsoft 365 Copilot Business Chat Information Disclosure Vulnerability CVE-2026-78501 8.6 HighSeptember 17, 2026
• microsoft visual studio code copilot chat extension, github copilot chat +1 more CoPilot Chat Security Feature Bypass Vulnerability CVE-2026-65675 7.1 HighAugust 11, 2026
• microsoft github copilot chat Microsoft Visual Studio Code CoPilot Chat Security Feature Bypass Vulnerability CVE-2026-50519 6.5 MediumJune 19, 2026
• microsoft copilot chat (microsoft edge), copilot chat +1 more Copilot Chat (Microsoft Edge) Information Disclosure Vulnerability CVE-2026-47644 Public exploit 6.5 MediumJune 4, 2026
• microsoft copilot chat (microsoft edge), copilot chat +1 more Copilot Chat (Microsoft Edge) Information Disclosure Vulnerability CVE-2026-33111 7.5 HighMay 7, 2026
• microsoft 365 copilot chat, 365 copilot's business chat +1 more M365 Copilot Information Disclosure Vulnerability CVE-2026-26129 7.5 HighMay 7, 2026
• microsoft 365 copilot chat, 365 copilot's business chat +1 more M365 Copilot Information Disclosure Vulnerability CVE-2026-26164 7.5 HighMay 7, 2026
• microsoft github copilot chat, visual studio code copilot chat extension +1 more GitHub Copilot and Visual Studio Code Information Disclosure Vulnerability CVE-2026-23653 5.7 MediumApril 14, 2026
• microsoft exchange online, microsoft 365 copilot chat, exchange online +2 more Microsoft Exchange Elevation of Privilege Vulnerability CVE-2026-26137 9.9 CriticalMarch 19, 2026
• microsoft visual studio code copilot chat extension, github copilot chat +1 more Microsoft Visual Studio Code CoPilot Chat Extension Security Feature Bypass Vulnerability CVE-2025-62449 6.8 MediumNovember 11, 2025
• microsoft visual studio code copilot chat extension, github copilot chat +1 more Agentic AI and Visual Studio Code Remote Code Execution Vulnerability CVE-2025-62222 Public exploit 8.8 HighNovember 11, 2025
• microsoft 365 copilot chat, 365 copilot's business chat +1 more Copilot Information Disclosure Vulnerability CVE-2025-59286 9.3 CriticalOctober 9, 2025
• microsoft 365 copilot chat, 365 copilot's business chat +1 more Copilot Information Disclosure Vulnerability CVE-2025-59272 9.3 CriticalOctober 9, 2025
• microsoft 365 copilot chat, 365 copilot's business chat +1 more Microsoft 365 Copilot BizChat Information Disclosure Vulnerability CVE-2025-53787 8.2 HighAugust 7, 2025
• microsoft 365 copilot chat, 365 copilot's business chat +1 more Microsoft 365 Copilot BizChat Information Disclosure Vulnerability CVE-2025-53774 6.5 MediumAugust 7, 2025