CVE-2021-21594Network attack vector

Sensitive-data exposure via HTTP query strings

Published Aug 16, 2021 · Updated Sep 16, 2024

Information exposure in Dell PowerScale OneFS 8.2.2 through 9.1.0.x allows remote attackers to obtain sensitive data through HTTP GET requests. An undisclosed OneFS web endpoint places sensitive values in the URL query string, allowing browser history, intermediaries, or request logs to retain them. No authentication or user interaction is required; Dell does not identify the affected endpoint or exposed values.

CVSS severity8.2
High
EPSS probability0.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure in Dell PowerScale OneFS 8.2.2 through 9.1.0.x allows remote attackers to obtain sensitive data through HTTP GET requests. An undisclosed OneFS web endpoint places sensitive values in the URL query string, allowing browser history, intermediaries, or request logs to retain them. No authentication or user interaction is required; Dell does not identify the affected endpoint or exposed values.

The record

CVE
CVE-2021-21594
Published
Aug 16, 2021
Updated
Sep 16, 2024
Vendor
Dell Technologies
Product
PowerScale OneFS
Classifications
CWE-598
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 16, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=8.2.2 - 9.1.0.x

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Dell Technologies · PowerScale OneFSversion=8.2.2 - 9.1.0.x

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
8.2DellCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
5.0NIST NVDAV:N/AC:L/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-598Use of GET Request Method With Sensitive Query Strings

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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