CVE-2021-21527

Privilege escalation via command injection

Published May 6, 2021 · Updated Sep 16, 2024

OS command injection in Dell PowerScale OneFS 8.1.0 through 9.1.0 allows local users with SSH or console privileges to escalate privileges. Dell has not published the affected command, input field, or missing neutralization operation. Exploitation requires ISI_PRIV_LOGIN_SSH or ISI_PRIV_LOGIN_CONSOLE and SmartLock Compliance Mode, and grants elevated ability to alter data or interrupt service.

CVSS severity6.0
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Dell PowerScale OneFS 8.1.0 through 9.1.0 allows local users with SSH or console privileges to escalate privileges. Dell has not published the affected command, input field, or missing neutralization operation. Exploitation requires ISI_PRIV_LOGIN_SSH or ISI_PRIV_LOGIN_CONSOLE and SmartLock Compliance Mode, and grants elevated ability to alter data or interrupt service.

The record

CVE
CVE-2021-21527
Published
May 6, 2021
Updated
Sep 16, 2024
Vendor
Dell Technologies
Product
PowerScale OneFS
Classifications
CWE-78, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. May 6, 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=unspecified <9.0.0 / 9.1.0 / 9.2.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Dell Technologies · PowerScale OneFSversion=unspecified <9.0.0 / 9.1.0 / 9.2.0

Published CVSS scores

6.0Dell TechnologiesCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
6.7NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
7.2NIST NVDAV:L/AC:L/Au:N/C:C/I:C/A:C

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-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1068Exploitation for Privilege Escalation

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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