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Microsoft Copilot CVE-2026-55145

| EUVDEUVD-2026-44226 MEDIUM
Command Injection (CWE-77)
2026-07-14 microsoft GHSA-534g-wpcr-fm9q
6.3
CVSS 3.1 · Vendor: microsoft
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Severity by source

Vendor (microsoft) PRIMARY
6.3 MEDIUM
AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N

Primary rating from Vendor (microsoft) · only source for this CVE.

CVSS VectorVendor: microsoft

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
None

Lifecycle Timeline

1
CVE Published
Jul 14, 2026 - 17:09 cve.org
MEDIUM 6.3

DescriptionCVE.org

Improper neutralization of special elements used in a command ('command injection') in Outlook Copilot allows an authorized attacker to perform tampering over a network.

Analysis

Improper neutralization of special elements used in a command ('command injection') in Outlook Copilot allows an authorized attacker to perform tampering over a network.

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CVE-2026-55145 vulnerability details – vuln.today

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