Insufficient Permission Validation in ManageEngine M365 Manager Plus Affected by Zohocorp
CVE-2026-12591

9.9CRITICAL

Key Information:

Vendor

Zohocorp
Status
M365 Manager Plus
Vendor
CVE Published:
12 November 2026

What is CVE-2026-12591?

Zohocorp's M365 Manager Plus versions prior to 4818 contain a vulnerability in the delegated administration interface. An authenticated technician can exploit insufficient permission validation to escalate privileges beyond the intended scope. This may lead to unauthorized remote code execution during administrative operations, potentially compromising the integrity and security of the affected systems.

Affected Version(s)

M365 Manager Plus 0 < 4818

References

https://www.manageengine.com/microsoft-365-management-rep...

CVSS V3.1

Score:
9.9
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.