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Description

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

PUBLISHED Reserved 2026-06-16 | Published 2026-07-14 | Updated 2026-07-14 | Assigner microsoft




MEDIUM: 6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N/E:P/RL:O/RC:C

Problem types

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

Product status

-
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55145 (Outlook Copilot Tampering Vulnerability) vendor-advisory patch

cve.org (CVE-2026-55145)

nvd.nist.gov (CVE-2026-55145)

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