CVE-2021-42099 json
Zoho ManageEngine M365 Manager Plus before 4421 is vulnerable to file-upload remote code execution.
published 2021-11-30 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-29085
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 6.8%
- EPSS 6.8% chance of exploitation in 30 days, percentile 94%
- public exploits
- 0
- none known
Summary
Zoho ManageEngine M365 Manager Plus before 4421 is vulnerable to file-upload remote code execution.
Exploit prediction
6.76% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
-
manageengine.com
/microsoft-365-management-reporting/release-notes.html#4421
release-notes, vendor-advisory
-
manageengine.com
product
Sources
- CVE List CVE-2021-42099
- NVD CVE-2021-42099
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.