CVE-2021-42099 (GCVE-0-2021-42099)
Vulnerability from cvelistv5 – Published: 2021-11-30 18:47 – Updated: 2024-08-04 03:22
VLAI
EPSS
VEX
Summary
Zoho ManageEngine M365 Manager Plus before 4421 is vulnerable to file-upload remote code execution.
Severity
9.8 (Critical)
CWE
- n/a
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.manageengine.com | x_refsource_MISC |
| https://www.manageengine.com/microsoft-365-manage… | x_refsource_CONFIRM |
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],
"negate": false,
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]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Zoho ManageEngine M365 Manager Plus before 4421 is vulnerable to file-upload remote code execution."
},
{
"lang": "es",
"value": "Zoho ManageEngine M365 Manager Plus versiones anteriores a 4421, es vulnerable a una ejecuci\u00f3n de c\u00f3digo remota de carga de archivos"
}
],
"id": "CVE-2021-42099",
"lastModified": "2026-06-17T04:09:18.960",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 7.5,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
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}
],
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{
"cvssData": {
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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]
},
"published": "2021-11-30T19:15:09.140",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Product"
],
"url": "https://www.manageengine.com"
},
{
"source": "cve@mitre.org",
"tags": [
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],
"url": "https://www.manageengine.com/microsoft-365-management-reporting/release-notes.html#4421"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
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],
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},
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}
],
"sourceIdentifier": "cve@mitre.org",
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"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-434"
}
],
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},
"redhat_vex": {
"current_release_date": "2026-03-27T13:27:24+00:00",
"cve": "CVE-2021-42099",
"id": "CVE-2021-42099",
"initial_release_date": "2021-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "CVE-2021-42099",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-42099.json",
"version": "3"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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