CVE-2026-42893

HighCVSS 7.5/10Last modified Oct 26, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-77

Affected software

Vendor	Product	Versions
Microsoft	Microsoft Outlook for iOS	>= 1.0.0, < 5.2617.1

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42893Vendor Advisory

Timeline

Published: May 12, 2026
Last modified: Oct 26, 2026
NVD status: Analyzed

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