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MEDIUM · 6.3

CVE-2026-55145

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

Vulnerability 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.

CVSS Score

6.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE

Affected Products

VendorProductVersions
MicrosoftCopilot-

Related Weaknesses (CWE)

CWE-77

References

FAQ

What is CVE-2026-55145?

CVE-2026-55145 is a vulnerability with a CVSS score of 6.3 (MEDIUM). Improper neutralization of special elements used in a command ('command injection') in Outlook Copilot allows an authorized attacker to perform tampering over a network.

How severe is CVE-2026-55145?

CVE-2026-55145 has been rated MEDIUM with a CVSS base score of 6.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-55145?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Copilot.