CVE-2021-35201Network attack vector

Unauthenticated file disclosure via external entity resolution

Published Sep 30, 2021 · Updated Aug 4, 2024

XML external entity injection in NETSCOUT nGeniusONE 6.3.0 build 1196 allows remote attackers to read files via crafted XML. The vendor identifies NEI as the affected locus but does not disclose which XML parser or input path resolves attacker-controlled external entities. Exploitation requires user interaction and no authentication; the published impact is limited to disclosure, with no integrity or availability impact.

CVSS severity6.5
Medium
EPSS probability0.96%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XML external entity injection in NETSCOUT nGeniusONE 6.3.0 build 1196 allows remote attackers to read files via crafted XML. The vendor identifies NEI as the affected locus but does not disclose which XML parser or input path resolves attacker-controlled external entities. Exploitation requires user interaction and no authentication; the published impact is limited to disclosure, with no integrity or availability impact.

The record

CVE
CVE-2021-35201
Published
Sep 30, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-611
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 30, 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

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
4.3NIST NVDAV:N/AC:M/Au:N/C:P/I:N/A:N

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

CWE-611Improper Restriction of XML External Entity Reference

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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