CVE-2021-42002Network attack vector

Unauthenticated RCE via REST API filter bypass

Published Nov 11, 2021 · Updated Aug 4, 2024

Authentication bypass in Zoho ManageEngine ADManager Plus before 7115 allows remote attackers to execute code through REST API requests. A filter bypass in REST API URL handling permits crafted requests to upload files that the server executes. The attack requires no authentication or user interaction and can provide remote code execution with the server's privileges.

CVSS severity9.8
Critical
EPSS probability7.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Zoho ManageEngine ADManager Plus before 7115 allows remote attackers to execute code through REST API requests. A filter bypass in REST API URL handling permits crafted requests to upload files that the server executes. The attack requires no authentication or user interaction and can provide remote code execution with the server's privileges.

The record

CVE
CVE-2021-42002
Published
Nov 11, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 11, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5ManageEngine Vulnerability Manager PlusAV:N/AC:L/Au:N/C:P/I:P/A:P/E:U/RL:OF/RC:C
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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