CVE-2021-21528

HIGHNVD 7.57.5—

7.5

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.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 50.9%
KEV: Not listed

Published

November 12, 2021

Last Modified

November 21, 2024

References (2)

security_alert@emchttps://www.dell.com/support/kbdoc/en-us/000193005/
af854a3a-2127-422b-91ae-364da2661108https://www.dell.com/support/kbdoc/en-us/000193005/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-548

Data Freshness Timeline

(refreshed 8× in last 7d / 8× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:36 UTCEG score recompute
2026-05-26 07:36 UTCGHSA enrichment
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-24 16:49 UTCepss_batch

Frequently asked(5)

What is CVE-2021-21528?

CVE-2021-21528 is a high vulnerability published on November 12, 2021. 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.

When was CVE-2021-21528 disclosed?

CVE-2021-21528 was first published in the National Vulnerability Database on November 12, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-21528 actively exploited?

CVE-2021-21528 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 50.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-21528?

CVE-2021-21528 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2021-21528?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-21528, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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Is Your Infrastructure Affected by CVE-2021-21528?

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CVE-2021-21528

📅 Published

🔄 Last Modified

🔗 References (2)