CVE-2021-21506

mediumpriority · track · 35EPSS 0.011 · 65 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.08% (65th) EPSS

CVSS 6.5 · medium

Is it mine?

4 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

PowerScale OneFS 8.1.2,8.2.2 and 9.1.0 contains an improper input sanitization issue in its API handler. An un-authtenticated with ISI_PRIV_SYS_SUPPORT and ISI_PRIV_LOGIN_PAPI privileges could potentially exploit this vulnerability, leading to potential privileges escalation.

cvss

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

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.5–8.8

v2.06.5mediumAV:N/AC:L/Au:S/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8 · impact 6.4

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · security_alert@emc.comexploitability 2.8 · impact 5.9

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimary

affected products (4)

Products and version ranges known to be affected.

Dell PowerScale OneFSunspecified → 8.1.2, 8.2.2,9.1.0.x,EMPIRE (9.2.0), GOTHAMenisa_euvdEU
dell emc powerscale onefs= 8.1.2nvdUScpe: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= 9.1.0nvdUScpe: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 2021-03-08modified 2026-06-17

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+25171 more

references (4)

External citations — patches, advisories, analysis.

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