PT-2026-42848 · Microsoft · M365 Copilot

Published 2026-05-22 · Updated 2026-05-23 · CVE-2026-42827

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions M365 Copilot (affected versions not specified)

Description Improper neutralization of special elements used in a command, known as command injection, allows an unauthorized attacker to disclose information over a network.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Command Injection

Weakness Enumeration

CWE-77

Related Identifiers

CVE-2026-42827

Affected Products

M365 Copilot

References · 4

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42827 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-42827 · Security Note
• https://t.me/CVEtracker/54687 · Telegram Post
• https://twitter.com/CVEnew/status/2058155765886750900 · Twitter Post