Detections
Analytics

CVE-2026-42824

high

Description

Missing authentication for critical function in M365 Copilot allows an unauthorized attacker to disclose information over a network.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42824

https://www.bleepingcomputer.com/news/security/new-attack-turned-microsoft-365-copilot-into-1-click-data-theft-tool/

https://thehackernews.com/2026/06/one-click-microsoft-365-copilot-flaw.html

Details

Source: Mitre, NVD

Published: 2026-06-04

Updated: 2026-06-19

Named Vulnerability: SearchLeak

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Severity: High

EPSS

EPSS: 0.00082