🔐 CVE Alert

CVE-2026-12591

CRITICAL 9.9

Privilege Escalation

CVSS Score
9.9
EPSS Score
0.0%
EPSS Percentile
0th

Zohocorp ManageEngine M365 Manager Plus versions below 4818 is affected by an authenticated technician may exploit insufficient permission validation in the delegated administration interface to escalate privileges beyond their intended scope, which could result in remote code execution during administrative processing.

CWE CWE-862
Vendor zohocorp
Product m365 manager plus
Published Nov 12, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Affected Versions

Zohocorp / M365 Manager Plus
0 < 4818

References

NVD ↗ CVE.org ↗ EPSS Data ↗
manageengine.com: https://www.manageengine.com/microsoft-365-management-reporting/CVE-2026-12591.html