CVE-2021-21528

Name: CVE-2021-21528
Creator: NVD / NIST
Published: 2021-11-12T23:15:08.24+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.95%

Last modified Jun 17, 2026

CVE-2021-21528 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Dell EMC PowerScale OneFS versions 9.1.0, 9.2.0.x, 9.2.1.x contain an Exposure of Information through Directory Listing vulnerability. This vulnerability is triggered when upgrading from a previous versions.. EPSS estimates a 0.95% chance of exploitation in the next 30 days.

Description

Dell EMC PowerScale OneFS versions 9.1.0, 9.2.0.x, 9.2.1.x contain an Exposure of Information through Directory Listing vulnerability. This vulnerability is triggered when upgrading from a previous versions.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.95%

56.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-548

Affected Software

Vendor	Product	Versions
Dell	Emc Powerscale Onefs	9.1.0.0
Dell	Emc Powerscale Onefs	9.2.0.0
Dell	Emc Powerscale Onefs	9.2.1.0

References

https://www.dell.com/support/kbdoc/en-us/000193005/Mitigation, Vendor Advisory
https://www.dell.com/support/kbdoc/en-us/000193005/Mitigation, Vendor Advisory

Timeline

Published: Nov 12, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-21528?

How severe is CVE-2021-21528?

CVE-2021-21528 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.95% probability of exploitation in the next 30 days.

How do I fix CVE-2021-21528?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-21528?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST