CVE-2021-20078Public exploitNetwork attack vector

Unauthenticated directory deletion via RDP path traversal

Published Apr 1, 2021 · Updated Aug 3, 2024

Path traversal in Zoho Corporation ManageEngine OpManager 125346 and earlier allows remote attackers to delete host directories. The Spark Gateway RDP endpoint uses the server URL parameter to choose a recording-file path, then recursively deletes sibling files and subdirectories without constraining traversal. No authentication is required; deletion runs with the OpManager service account and can interrupt the service or leave the host unusable.

CVSS severity9.1
Critical
EPSS probability60.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Zoho Corporation ManageEngine OpManager 125346 and earlier allows remote attackers to delete host directories. The Spark Gateway RDP endpoint uses the server URL parameter to choose a recording-file path, then recursively deletes sibling files and subdirectories without constraining traversal. No authentication is required; deletion runs with the OpManager service account and can interrupt the service or leave the host unusable.

The record

CVE
CVE-2021-20078
Published
Apr 1, 2021
Updated
Aug 3, 2024
Vendor
Zoho Corporation
Product
ManageEngine OpManager
Classifications
CWE-22, T1485
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 1, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All versions prior to version build 125346

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Zoho Corporation · ManageEngine OpManagerversion=All versions prior to version build 125346

Published CVSS scores

9.4NIST NVDAV:N/AC:L/Au:N/C:N/I:C/A:C
9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

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 exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1485Data Destruction

Public exploit references

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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