CVE-2021-35203Network attack vector

Authenticated file read via crafted filename parameter

Published Sep 30, 2021 · Updated Aug 4, 2024

Arbitrary file read in NETSCOUT Systems nGeniusONE 6.3.0 build 1196 allows remote authenticated users to read files via FDSQueryService. FDSQueryService accepts a crafted request parameter as a filename and reads the named file without enforcing intended access restrictions. A low-privileged authenticated session and user interaction are required; the documented impact is file disclosure only.

CVSS severity5.7
Medium
EPSS probability0.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file read in NETSCOUT Systems nGeniusONE 6.3.0 build 1196 allows remote authenticated users to read files via FDSQueryService. FDSQueryService accepts a crafted request parameter as a filename and reads the named file without enforcing intended access restrictions. A low-privileged authenticated session and user interaction are required; the documented impact is file disclosure only.

The record

CVE
CVE-2021-35203
Published
Sep 30, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-552, T1005
Attack vector
network
Privileges
authenticated

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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

3.5NIST NVDAV:N/AC:M/Au:S/C:P/I:N/A:N
5.7NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-552Files or Directories Accessible to External Parties
T1005Data from Local System

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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