What is CVE-2021-21594?

CVE-2021-21594 is a high-severity vulnerability in Dell EMC Powerscale Onefs, classified under CWE-598. CVSS score: 8.2/10. Published 2021-08-16.

How severe is CVE-2021-21594?

High severity. CVSS v3 base score is 8.2 out of 10.

Vulnerability in Dell EMC Powerscale Onefs

CVE-2021-21594

Dell PowerScale OneFS versions 8.2.2 - 9.1.0.x contain a use of get request method with sensitive query strings vulnerability. It can lead to potential disclosure of sensitive data. Dell recommends upgrading at your earliest opportunity.

Published 2021-08-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H.

EPSS exploit prediction

EPSS: 0.008 (56.0th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Dell EMC Powerscale Onefs — versions 8.2.2
Dell Powerscale Onefs — versions 8.2.2 - 9.1.0.x

Weakness classification (CWE)

CWE-598

References

www.dell.com/support/kbdoc/000190408 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-21594?: CVE-2021-21594 is a high-severity vulnerability in Dell EMC Powerscale Onefs, classified under CWE-598. CVSS score: 8.2/10. Published 2021-08-16.
How severe is CVE-2021-21594?: High severity. CVSS v3 base score is 8.2 out of 10.