CVE-2021-21595

Privilege escalation via OS command injection

Published Aug 16, 2021 · Updated Sep 17, 2024

Command injection in Dell PowerScale OneFS 8.2.x through 9.1.1.x allows local compadmin users to elevate privileges on affected clusters. A OneFS operation fails to neutralize special elements before incorporating compadmin-controlled input into an OS command, but Dell does not identify the operation. Only SmartLock WORM compliance-mode clusters are affected; successful exploitation permits privileged command effects that can alter integrity or interrupt service.

CVSS severity6.0
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Dell PowerScale OneFS 8.2.x through 9.1.1.x allows local compadmin users to elevate privileges on affected clusters. A OneFS operation fails to neutralize special elements before incorporating compadmin-controlled input into an OS command, but Dell does not identify the operation. Only SmartLock WORM compliance-mode clusters are affected; successful exploitation permits privileged command effects that can alter integrity or interrupt service.

The record

CVE
CVE-2021-21595
Published
Aug 16, 2021
Updated
Sep 17, 2024
Vendor
Dell Technologies
Product
PowerScale OneFS
Classifications
CWE-77, T1059
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Aug 16, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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.x - 9.1.1.x

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Dell Technologies · PowerScale OneFSversion=8.2.x - 9.1.1.x

Published CVSS scores

4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
6.7NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
6.0Dell TechnologiesCVSS:3.1/AV:L/AC:L/PR:H/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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059Command and Scripting Interpreter

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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