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.

Score

CVSS 3.1 7.1 High

Status

Analyzed - secure@microsoft.com

Published

2026-07-14

Last modified

2026-10-28

Weaknesses

CWE-77

Affected products

• Copilot (Microsoft)

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55145