CVE-2026-42827

MEDIUM

Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to disclose information over a network.

CVSS v3.1 Score

6.5
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Published: 5/22/2026Modified: 5/27/2026

Related Intelligence (1)

HIGHVulnerability

NVD HIGH: CVE-2026-42827 — Improper neutralization of special elements used in a command ('command injectio...

Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to disclose information over a network.

CVE-2026-42827
NIST NVD

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42827Vendor Advisory