CVE-2026-21426

Local privilege escalation via undisclosed privileged execution

Published Mar 4, 2026 · Updated Mar 4, 2026

Execution with unnecessary privileges in Dell PowerScale OneFS allows local users with high privileges to elevate privileges and disclose data. Dell has not published the affected component or the privileged operation performed on attacker-controlled input in its proprietary code. The affected ranges are before 9.10.1.6 and 9.11.0.0 through 9.12.0.1; exploitation requires local access and high privileges and can interrupt service through an undisclosed failure mode.

CVSS severity6.7
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Execution with unnecessary privileges in Dell PowerScale OneFS allows local users with high privileges to elevate privileges and disclose data. Dell has not published the affected component or the privileged operation performed on attacker-controlled input in its proprietary code. The affected ranges are before 9.10.1.6 and 9.11.0.0 through 9.12.0.1; exploitation requires local access and high privileges and can interrupt service through an undisclosed failure mode.

The record

CVE
CVE-2026-21426
Published
Mar 4, 2026
Updated
Mar 4, 2026
Vendor
Dell Technologies
Product
PowerScale OneFS
Classifications
CWE-250, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Mar 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 4, 2026Record 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=9.11.0.0 through 9.12.0.1 <9.13.0.0 or later
  2. Affected versionversion=prior to 9.10.1.6 <9.10.1.6 or later

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Dell Technologies · PowerScale OneFSversion=9.11.0.0 through 9.12.0.1 <9.13.0.0 or later; version=prior to 9.10.1.6 <9.10.1.6 or later

Published CVSS scores

6.7Dell TechnologiesCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/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-250Execution with Unnecessary Privileges
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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