CVE-2026-42893 - Vulnerability Details - OpenCVE

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

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Microsoft	Outlook

Configuration 1 [-]

cpe:2.3:a:microsoft:outlook:*:*:*:*:*:iphone_os:*:*

No data.

References

Link	Providers
https://www.spirityenterprise.com/pentest
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42893

History

Wed, 13 May 2026 11:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Tue, 12 May 2026 17:30:00 +0000

Type	Values Removed	Values Added
Description		Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to perform tampering over a network.
Title		Microsoft Outlook for iOS Tampering Vulnerability
First Time appeared		Microsoft Microsoft outlook
Weaknesses		CWE-77
CPEs		cpe:2.3:a:microsoft:outlook::::::iphone_os::*
Vendors & Products		Microsoft Microsoft outlook
References		https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42893
Metrics		cvssV3_1 `{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N/E:U/RL:O/RC:C'}`

MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2026-05-12T16:59:37.330Z

Updated: 2026-05-13T17:59:31.542Z

Reserved: 2026-04-30T22:35:54.966Z

Link: CVE-2026-42893

Vulnrichment

Updated: 2026-05-13T10:19:16.449Z

NVD

Status : Analyzed

Published: 2026-05-12T18:17:26.343

Modified: 2026-05-13T18:37:09.340

Link: CVE-2026-42893

Redhat

No data.

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