CVE-2021-38298Network attack vector

Unauthenticated server-side requests via blind XXE

Published Oct 7, 2021 · Updated Aug 4, 2024

Blind XXE in Zoho ManageEngine ADManager Plus before 7110 allows remote attackers to trigger external entity resolution via crafted XML. The vendor has not disclosed the affected endpoint or parser operation beyond identifying the flaw as blind XXE. Unauthenticated network access is sufficient, and successful exploitation can cause server-originated requests or out-of-band data disclosure.

CVSS severity9.8
Critical
EPSS probability2.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Blind XXE in Zoho ManageEngine ADManager Plus before 7110 allows remote attackers to trigger external entity resolution via crafted XML. The vendor has not disclosed the affected endpoint or parser operation beyond identifying the flaw as blind XXE. Unauthenticated network access is sufficient, and successful exploitation can cause server-originated requests or out-of-band data disclosure.

The record

CVE
CVE-2021-38298
Published
Oct 7, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-611, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 7, 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

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.

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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

CWE-611Improper Restriction of XML External Entity Reference
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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