CVE-2026-42824

HIGH EPSS 93.8%
Published Jun 4, 20263w ago · Modified Jun 19, 20261w ago
7.5 CVSS 3.1
High
Find Similar
Published Jun 4, 2026 3w ago
Last Modified Jun 19, 2026 1w ago

Description

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

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
93.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-77 Command Injection Injection

Affected Products 1

VendorProductVersionRange
microsoftcopilot*any

References 1

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.