MicrosoftCVE-2026-85885
Microsoft 365 Copilot: command injection
Critical9.9CVE-2026-85885 · Published Sep 17, 2026 · updated Sep 25, 2026
Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an authorized attacker to elevate privileges over a network.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Microsoft 365 Copilot Product | all versions | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-77
More Microsoft advisories
All Microsoft| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Sep 17 | Microsoft Azure AI Foundry: missing authentication | Critical10.0 | No fix yet |
| Sep 17 | Microsoft Azure AI Foundry: server-side request forgery | High7.5 | No fix yet |
| Sep 17 | Microsoft Azure Cosmos DB: privilege escalation | Critical9.6 | No fix yet |
| Sep 17 | Microsoft Azure Logic Apps: improper access control | Critical10.0 | No fix yet |
| Sep 17 | Microsoft 365 Copilot's Business Chat: command injection | High7.4 | No fix yet |
| Sep 17 | Microsoft Dataverse: authentication bypass | Critical9.0 | No fix yet |