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Microsoft Security Response CenterCVE-2026-55946

Microsoft Copilot Information Disclosure Vulnerability

Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to disclose information over a network.

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6.1CVSS out of 10Critical severity
Scope

What the vendor says is affected

  • Microsoft Copilot
Timeline

When this advisory changed

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

Vulnerabilities

CVEs named in this advisory

CVE-2026-55946View CVSS, KEV, EPSS, and threat context
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