CVE-2026-42893

Published May 12, 2026

Last updated 12 days ago

Overview

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.
Source
secure@microsoft.com
NVD status
Analyzed
Products
outlook

Risk scores

CVSS 3.1

Type
Primary
Base score
7.5
Impact score
3.6
Exploitability score
3.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Severity
HIGH

Weaknesses

secure@microsoft.com
CWE-77

Social media

Hype score
Not currently trending

Configurations

References

Sources include official advisories and independent security research.