# CVE-2021-21528

## Summary

- **CVE ID:** CVE-2021-21528
- **Severity:** HIGH
- **CVSS Score:** 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
- **CWE:** CWE-548
- **Published:** Nov 12, 2021
- **Last Modified:** Mar 13, 2026

## 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.

## Affected Products

- Dell — PowerScale OneFS (9.1.0, 9.2.0.x, 9.2.1.x)

## References

- [CNA](https://www.dell.com/support/kbdoc/en-us/000193005/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.27%
- **EPSS Percentile:** 50.5

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._