Privilege Escalation

published 2026-11-12 3h ago modified 2026-11-12 3h ago also EUVD-2026-124322

cvss: 9.9; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: —; no EPSS score yet
public exploits: 0; none known

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.

Patch / fix

fixed in 1

Zohocorp M365 Manager Plus 4818

Is CVE-2026-12591 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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CVSS scores

assigned by	version	score	vector
CNA	3.1	9.9	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected products

Zohocorp M365 Manager Plus

Classification

Weakness

CWE-862 Missing Authorization

References

manageengine.com /microsoft-365-management-reporting/CVE-2026-12591.html

Sources

CVE List CVE-2026-12591
NVD CVE-2026-12591

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