CVE-2026-55145

medium Microsoft
CVSS v3 Base Score
6.3
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N
EPSS Score
0.4%
Exploitation probability in 30 days
Top 70% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Confidentiality
High
Integrity
Low
Availability
None
Published: July 14, 2026 (54 days ago)
Last Modified: July 22, 2026
Vendor: Microsoft
Source: NVD

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.

CWE

CWE-77

Affected Products

microsoft copilot

References

🔗 msrc.microsoft.com