Technology · Microsoft
Microsoft M365 Copilot vulnerabilities
Updated . Rebuilt every hour.
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.
- Last 7 days
- 0
- Last 90 days
- 2
- Critical, all time
- 4
- Exploited in the wild
- 0
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 resourcehighCVSS 7.7EPSS 0.9%
- CVE-2026-85885: Microsoft M365 Copilot command injection privilege escalationcriticalCVSS 9.9EPSS 1.0%
- CVE-2026-50517: Microsoft 365 Copilot deserialization of untrusted datacriticalCVSS 9.9
- CVE-2026-41106: Microsoft M365 Copilot open redirect privilege escalationcriticalCVSS 9.3
- CVE-2026-42895: Microsoft Copilot command injectionmediumCVSS 6.5
- CVE-2026-54130: Microsoft 365 Copilot missing authentication for critical functioncriticalCVSS 9.8
- CVE-2026-42824: Microsoft M365 Copilot command injection information disclosuremediumCVSS 6.5
- CVE-2026-42827: Microsoft M365 Copilot command injectionmediumCVSS 6.5EPSS 0.1%
- CVE-2026-42893: Microsoft M365 Copilot command injectionhighCVSS 7.4
Most severe Microsoft M365 Copilot vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-85885: Microsoft M365 Copilot command injection privilege escalationcriticalCVSS 9.9EPSS 1.0%
- CVE-2026-50517: Microsoft 365 Copilot deserialization of untrusted datacriticalCVSS 9.9
- CVE-2026-54130: Microsoft 365 Copilot missing authentication for critical functioncriticalCVSS 9.8
- CVE-2026-41106: Microsoft M365 Copilot open redirect privilege escalationcriticalCVSS 9.3
- CVE-2026-85887: Microsoft M365 Copilot incorrect permission assignment in critical resourcehighCVSS 7.7EPSS 0.9%
- CVE-2026-42893: Microsoft M365 Copilot command injectionhighCVSS 7.4
- CVE-2026-42827: Microsoft M365 Copilot command injectionmediumCVSS 6.5EPSS 0.1%
- CVE-2026-42895: Microsoft Copilot command injectionmediumCVSS 6.5
- CVE-2026-42824: Microsoft M365 Copilot command injection information disclosuremediumCVSS 6.5
Vulnerabilities per week
Nothing in the last four weeks, down from 2 vulnerabilities in the four before. 0 critical against 1. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 2 | 1 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Microsoft M365 Copilot vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/m365-copilot)<a href="https://junglewise.ai/threats/technologies/m365-copilot"><img src="https://junglewise.ai/threats/technologies/m365-copilot/badge.svg" alt="Microsoft M365 Copilot vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/m365-copilot.json, and this page as text at https://junglewise.ai/threats/technologies/m365-copilot.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Microsoft M365 Copilot vulnerabilities", https://junglewise.ai/threats/technologies/m365-copilot, 11 November 2026.