CVE-2026-12591
Privilege Escalation
Description
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.
INFO
Published Date :
Nov. 12, 2026, 7:16 a.m.
Last Modified :
Nov. 12, 2026, 7:16 a.m.
Remotely Exploit :
Yes !
Source :
0fc0942c-577d-436f-ae8e-945763c79b02
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | 0fc0942c-577d-436f-ae8e-945763c79b02 | ||||
| CVSS 3.1 | CRITICAL | MITRE-CVE |
Solution
- Update ManageEngine M365 Manager Plus to version 4818.
- Apply vendor patches for newer versions.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-12591.
| URL | Resource |
|---|---|
| https://www.manageengine.com/microsoft-365-management-reporting/CVE-2026-12591.html |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-12591 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-12591
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-12591 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-12591 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 0fc0942c-577d-436f-ae8e-945763c79b02
Nov. 12, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Added CWE CWE-862 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/12xxx/CVE-2026-12591.json">CVE-2026-12591</a> Added Reference https://www.manageengine.com/microsoft-365-management-reporting/CVE-2026-12591.html