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Vulnerability record · CVE-2021-42099 · published 30 November 2021

CVE-2021-42099: Zohocorp manageengine m365 manager plus unrestricted file upload vulnerability

Zohocorp · Manageengine M365 Manager Plus

Zoho ManageEngine M365 Manager Plus before 4421 is vulnerable to file-upload remote code execution.

9.8 CVSS 3.1 Critical EPSS 6.8% · top 6.3% CWE-434 · Unrestricted file upload
9.8CVSS 3.1 base score, v2 7.5
6.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

Zoho ManageEngine M365 Manager Plus before 4421 is vulnerable to file-upload remote code execution.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.manageengine.com Product
https://www.manageengine.com/microsoft-365-management-reporting/release-notes.html#4421 Release NotesVendor Advisory
https://www.manageengine.com Product
https://www.manageengine.com/microsoft-365-management-reporting/release-notes.html#4421 Release NotesVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-42099), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.