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M365 Copilot CVE-2026-42893

| EUVD-2026-29716 HIGH
Command Injection (CWE-77)
2026-05-12 microsoft GHSA-h35m-vhjw-vqxj
7.4
CVSS 3.1
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CVSS VectorNVD

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

Lifecycle Timeline

1
CVE Published
May 12, 2026 - 16:59 nvd
HIGH 7.4

DescriptionNVD

Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to perform tampering over a network.

Analysis

Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to perform tampering over a network.

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CVE-2026-42893 vulnerability details – vuln.today

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