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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.

PUBLISHED Reserved 2026-04-30 | Published 2026-05-12 | Updated 2026-05-20 | Assigner microsoft




HIGH: 7.4CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N/E:U/RL:O/RC:C

Problem types

CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')

Product status

1.0.0 (custom) before 5.2617.1
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42893 (Microsoft Outlook for iOS Tampering Vulnerability) vendor-advisory patch

cve.org (CVE-2026-42893)

nvd.nist.gov (CVE-2026-42893)

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