# Microsoft M365 Copilot vulnerabilities Source: https://junglewise.ai/threats/technologies/m365-copilot Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 11 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/m365-copilot.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 9 vulnerabilities in Microsoft M365 Copilot: 0 in the last 7 days and 2 in the last 90 days, 4 of them critical and 0 exploited in the wild. The most recent, CVE-2026-85887, was published on 18 September 2026. Nothing in the last four weeks, down from 2 vulnerabilities in the four before. 0 critical against 1. ## Counts - Last 7 days: 0 - Last 30 days: 0 - Last 90 days: 2 - All time: 9 (4 critical, 0 exploited in the wild) ## About Microsoft M365 Copilot Microsoft AI assistant integrated into Microsoft 365 applications for enterprise productivity. ## Latest Microsoft M365 Copilot vulnerabilities - [CVE-2026-85887: Microsoft M365 Copilot incorrect permission assignment in critical resource](https://junglewise.ai/threats/cve-2026-85887-microsoft-m365-copilot-incorrect-permission-assignment-in) (high, CVSS 7.7, published 18 Sep 2026) - [CVE-2026-85885: Microsoft M365 Copilot command injection privilege escalation](https://junglewise.ai/threats/cve-2026-85885-improper-neutralization-of-special-elements-used-in-a-command) (critical, CVSS 9.9, published 17 Sep 2026) - [CVE-2026-50517: Microsoft 365 Copilot deserialization of untrusted data](https://junglewise.ai/threats/cve-2026-50517-microsoft-365-copilot-deserialization-of-untrusted-data) (critical, CVSS 9.9, published 24 Jul 2026) - [CVE-2026-41106: Microsoft M365 Copilot open redirect privilege escalation](https://junglewise.ai/threats/cve-2026-41106-microsoft-m365-copilot-open-redirect-privilege-escalation) (critical, CVSS 9.3, published 2 Jul 2026) - [CVE-2026-42895: Microsoft Copilot command injection](https://junglewise.ai/threats/cve-2026-42895-microsoft-copilot-command-injection) (medium, CVSS 6.5, published 19 Jun 2026) - [CVE-2026-54130: Microsoft 365 Copilot missing authentication for critical function](https://junglewise.ai/threats/cve-2026-54130-microsoft-365-copilot-missing-authentication-for-critical) (critical, CVSS 9.8, published 18 Jun 2026) - [CVE-2026-42824: Microsoft M365 Copilot command injection information disclosure](https://junglewise.ai/threats/cve-2026-42824-microsoft-m365-copilot-command-injection-information-disclosure) (medium, CVSS 6.5, published 4 Jun 2026) - [CVE-2026-42827: Microsoft M365 Copilot command injection](https://junglewise.ai/threats/cve-2026-42827-microsoft-m365-copilot-command-injection) (medium, CVSS 6.5, published 22 May 2026) - [CVE-2026-42893: Microsoft M365 Copilot command injection](https://junglewise.ai/threats/cve-2026-42893-microsoft-m365-copilot-command-injection) (high, CVSS 7.4, published 12 May 2026) ## Most severe Microsoft M365 Copilot vulnerabilities - [CVE-2026-85885: Microsoft M365 Copilot command injection privilege escalation](https://junglewise.ai/threats/cve-2026-85885-improper-neutralization-of-special-elements-used-in-a-command) (critical, CVSS 9.9, published 17 Sep 2026) - [CVE-2026-50517: Microsoft 365 Copilot deserialization of untrusted data](https://junglewise.ai/threats/cve-2026-50517-microsoft-365-copilot-deserialization-of-untrusted-data) (critical, CVSS 9.9, published 24 Jul 2026) - [CVE-2026-54130: Microsoft 365 Copilot missing authentication for critical function](https://junglewise.ai/threats/cve-2026-54130-microsoft-365-copilot-missing-authentication-for-critical) (critical, CVSS 9.8, published 18 Jun 2026) - [CVE-2026-41106: Microsoft M365 Copilot open redirect privilege escalation](https://junglewise.ai/threats/cve-2026-41106-microsoft-m365-copilot-open-redirect-privilege-escalation) (critical, CVSS 9.3, published 2 Jul 2026) - [CVE-2026-85887: Microsoft M365 Copilot incorrect permission assignment in critical resource](https://junglewise.ai/threats/cve-2026-85887-microsoft-m365-copilot-incorrect-permission-assignment-in) (high, CVSS 7.7, published 18 Sep 2026) - [CVE-2026-42893: Microsoft M365 Copilot command injection](https://junglewise.ai/threats/cve-2026-42893-microsoft-m365-copilot-command-injection) (high, CVSS 7.4, published 12 May 2026) - [CVE-2026-42827: Microsoft M365 Copilot command injection](https://junglewise.ai/threats/cve-2026-42827-microsoft-m365-copilot-command-injection) (medium, CVSS 6.5, published 22 May 2026) - [CVE-2026-42895: Microsoft Copilot command injection](https://junglewise.ai/threats/cve-2026-42895-microsoft-copilot-command-injection) (medium, CVSS 6.5, published 19 Jun 2026) - [CVE-2026-42824: Microsoft M365 Copilot command injection information disclosure](https://junglewise.ai/threats/cve-2026-42824-microsoft-m365-copilot-command-injection-information-disclosure) (medium, CVSS 6.5, published 4 Jun 2026) ## Vulnerabilities per week Nothing in the last four weeks, down from 2 vulnerabilities in the four before. 0 critical against 1. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 2 | 1 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 0 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Other Microsoft technologies - [Microsoft Windows](https://junglewise.ai/threats/technologies/windows): 2,362 vulnerabilities - [Microsoft Windows 10](https://junglewise.ai/threats/technologies/windows-10): 589 vulnerabilities - [Microsoft Windows 11 24h2](https://junglewise.ai/threats/technologies/windows-11-24h2): 565 vulnerabilities - [Microsoft Windows 11 25h2](https://junglewise.ai/threats/technologies/windows-11-25h2): 534 vulnerabilities - [Microsoft Windows Server 2025](https://junglewise.ai/threats/technologies/windows-server-2025): 534 vulnerabilities - [Microsoft Windows Server 2022](https://junglewise.ai/threats/technologies/windows-server-2022): 528 vulnerabilities - [Microsoft Windows Server 2019](https://junglewise.ai/threats/technologies/windows-server-2019): 521 vulnerabilities - [Microsoft Windows Server 2012](https://junglewise.ai/threats/technologies/windows-server-2012): 517 vulnerabilities - [Microsoft Windows 11](https://junglewise.ai/threats/technologies/windows-11): 494 vulnerabilities - [Microsoft Windows Server 2016](https://junglewise.ai/threats/technologies/windows-server-2016): 476 vulnerabilities - [Microsoft Windows 10 1809](https://junglewise.ai/threats/technologies/windows-10-1809): 380 vulnerabilities - [Microsoft Windows 10 21h2](https://junglewise.ai/threats/technologies/windows-10-21h2): 373 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Microsoft M365 Copilot vulnerabilities", https://junglewise.ai/threats/technologies/m365-copilot, 11 November 2026.