CVE-2021-21563

mediumpriority · track · 26EPSS 0.008 · 57 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.83% (57th) EPSS

CVSS 4 · medium

Is it mine?

6 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

Dell EMC PowerScale OneFS versions 8.1.2-9.1.0.x contain an Improper Check for Unusual or Exceptional Conditions in its auditing component.This can lead to an authenticated user with low-privileges to trigger a denial of service event.

cvss

Technical severity, 0–10. One row per scoring source.

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04mediumAV:N/AC:L/Au:S/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 8 · impact 2.9

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 3.6

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · security_alert@emc.comexploitability 2.8 · impact 3.6

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-754USprimary

affected products (6)

Products and version ranges known to be affected.

Dell PowerScale OneFS≤ 8.1.2-9.1.0.xenisa_euvdEU
dell emc powerscale onefs= 8.1.3nvdUScpe:2.3:o:dell:emc_powerscale_onefs:*:*:*:*:*:*:*:*
dell emc powerscale onefs= 8.2.1nvdUScpe:2.3:o:dell:emc_powerscale_onefs:*:*:*:*:*:*:*:*
dell emc powerscale onefs= 8.2.2nvdUScpe:2.3:o:dell:emc_powerscale_onefs:*:*:*:*:*:*:*:*
dell emc powerscale onefs= 9.0.0.0nvdUScpe:2.3:o:dell:emc_powerscale_onefs:*:*:*:*:*:*:*:*
dell emc powerscale onefs= 9.1.0.0nvdUScpe:2.3:o:dell:emc_powerscale_onefs:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2021-08-03modified 2026-06-17

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+777 more

references (4)

External citations — patches, advisories, analysis.

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