{"schema_version":1,"title":"Microsoft 365 Copilot Chat vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 4 vulnerabilities in Microsoft 365 Copilot Chat: 0 in the last 7 days and 0 in the last 90 days, 2 of them critical and 0 exploited in the wild. The most recent, CVE-2026-26164, was published on 7 May 2026.","url":"https://junglewise.ai/threats/technologies/365-copilot-chat","json_url":"https://junglewise.ai/threats/technologies/365-copilot-chat.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/365-copilot-chat","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","thin":true,"counts":{"high":2,"all_time":4,"critical":2,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":0,"last_365_days":2},"latest":[{"cve":"CVE-2026-26164","cvss":7.5,"epss":0.001,"slug":"cve-2026-26164-microsoft-m365-copilot-command-injection-information-disclosure","title":"Microsoft M365 Copilot command injection information disclosure","severity":"high","exploited":false,"published_at":"2026-05-07T22:16:33.773+00:00","url":"https://junglewise.ai/threats/cve-2026-26164-microsoft-m365-copilot-command-injection-information-disclosure"},{"cve":"CVE-2026-26129","cvss":7.5,"epss":0.0006,"slug":"cve-2026-26129-microsoft-m365-copilot-command-injection","title":"Microsoft M365 Copilot command injection","severity":"high","exploited":false,"published_at":"2026-05-07T22:16:33.607+00:00","url":"https://junglewise.ai/threats/cve-2026-26129-microsoft-m365-copilot-command-injection"},{"cve":"CVE-2025-59286","cvss":9.3,"epss":0.0057,"slug":"cve-2025-59286-improper-neutralization-of-special-elements-used-in-a-command","title":"Improper neutralization of special elements used in a command ('command injection') in Copilot allows an unauthorized…","severity":"critical","exploited":false,"published_at":"2025-10-09T21:15:39.133+00:00","url":"https://junglewise.ai/threats/cve-2025-59286-improper-neutralization-of-special-elements-used-in-a-command"},{"cve":"CVE-2025-59272","cvss":9.3,"epss":0.0057,"slug":"cve-2025-59272-improper-neutralization-of-special-elements-used-in-a-command","title":"Improper neutralization of special elements used in a command ('command injection') in Copilot allows an unauthorized…","severity":"critical","exploited":false,"published_at":"2025-10-09T21:15:38.93+00:00","url":"https://junglewise.ai/threats/cve-2025-59272-improper-neutralization-of-special-elements-used-in-a-command"}],"weekly":[{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-05","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-12","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-19","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-26","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-11-02","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-11-09","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"Microsoft Windows","slug":"windows","vulnerabilities":2362,"url":"https://junglewise.ai/threats/technologies/windows"},{"name":"Microsoft Windows 10","slug":"windows-10","vulnerabilities":589,"url":"https://junglewise.ai/threats/technologies/windows-10"},{"name":"Microsoft Windows 11 24h2","slug":"windows-11-24h2","vulnerabilities":565,"url":"https://junglewise.ai/threats/technologies/windows-11-24h2"},{"name":"Microsoft Windows 11 25h2","slug":"windows-11-25h2","vulnerabilities":534,"url":"https://junglewise.ai/threats/technologies/windows-11-25h2"},{"name":"Microsoft Windows Server 2025","slug":"windows-server-2025","vulnerabilities":534,"url":"https://junglewise.ai/threats/technologies/windows-server-2025"},{"name":"Microsoft Windows Server 2022","slug":"windows-server-2022","vulnerabilities":528,"url":"https://junglewise.ai/threats/technologies/windows-server-2022"},{"name":"Microsoft Windows Server 2019","slug":"windows-server-2019","vulnerabilities":521,"url":"https://junglewise.ai/threats/technologies/windows-server-2019"},{"name":"Microsoft Windows Server 2012","slug":"windows-server-2012","vulnerabilities":517,"url":"https://junglewise.ai/threats/technologies/windows-server-2012"},{"name":"Microsoft Windows 11","slug":"windows-11","vulnerabilities":494,"url":"https://junglewise.ai/threats/technologies/windows-11"},{"name":"Microsoft Windows Server 2016","slug":"windows-server-2016","vulnerabilities":476,"url":"https://junglewise.ai/threats/technologies/windows-server-2016"},{"name":"Microsoft Windows 10 1809","slug":"windows-10-1809","vulnerabilities":380,"url":"https://junglewise.ai/threats/technologies/windows-10-1809"},{"name":"Microsoft Windows 10 21h2","slug":"windows-10-21h2","vulnerabilities":373,"url":"https://junglewise.ai/threats/technologies/windows-10-21h2"}],"technology":{"hub":true,"name":"Microsoft 365 Copilot Chat","slug":"365-copilot-chat","vendor":{"hub":true,"name":"Microsoft","slug":"microsoft","url":"https://junglewise.ai/threats/vendors/microsoft"},"aliases":[],"homepage":"https://www.microsoft.com/en-us/microsoft-365/copilot","repo_url":"https://www.microsoft.com/en-us/microsoft-365/copilot/copilot-for-work","description":"An AI-powered chat interface integrated into Microsoft 365 productivity applications.","url":"https://junglewise.ai/threats/technologies/365-copilot-chat"},"most_severe":[{"cve":"CVE-2025-59286","cvss":9.3,"epss":0.0057,"slug":"cve-2025-59286-improper-neutralization-of-special-elements-used-in-a-command","title":"Improper neutralization of special elements used in a command ('command injection') in Copilot allows an unauthorized…","severity":"critical","exploited":false,"published_at":"2025-10-09T21:15:39.133+00:00","url":"https://junglewise.ai/threats/cve-2025-59286-improper-neutralization-of-special-elements-used-in-a-command"},{"cve":"CVE-2025-59272","cvss":9.3,"epss":0.0057,"slug":"cve-2025-59272-improper-neutralization-of-special-elements-used-in-a-command","title":"Improper neutralization of special elements used in a command ('command injection') in Copilot allows an unauthorized…","severity":"critical","exploited":false,"published_at":"2025-10-09T21:15:38.93+00:00","url":"https://junglewise.ai/threats/cve-2025-59272-improper-neutralization-of-special-elements-used-in-a-command"},{"cve":"CVE-2026-26164","cvss":7.5,"epss":0.001,"slug":"cve-2026-26164-microsoft-m365-copilot-command-injection-information-disclosure","title":"Microsoft M365 Copilot command injection information disclosure","severity":"high","exploited":false,"published_at":"2026-05-07T22:16:33.773+00:00","url":"https://junglewise.ai/threats/cve-2026-26164-microsoft-m365-copilot-command-injection-information-disclosure"},{"cve":"CVE-2026-26129","cvss":7.5,"epss":0.0006,"slug":"cve-2026-26129-microsoft-m365-copilot-command-injection","title":"Microsoft M365 Copilot command injection","severity":"high","exploited":false,"published_at":"2026-05-07T22:16:33.607+00:00","url":"https://junglewise.ai/threats/cve-2026-26129-microsoft-m365-copilot-command-injection"}],"generated_at":"2026-11-11T03:07:00.183524+00:00"}