MicrosoftCVE-2026-55946
Microsoft Copilot: command injection
Medium6.1CVE-2026-55946 · Published Sep 17, 2026 · updated Sep 25, 2026
Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to disclose information over a network.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Microsoft Copilot Product | all versions | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N
- 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 365 Copilot: command injection | Critical9.9 | No fix yet |
| 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 |