How severe is CVE-2020-5328?

CVE-2020-5328 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-5328 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-5328?

CVE-2020-5328 affects Dell Emc Isilon Onefs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-5328?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2020-5328 published?

CVE-2020-5328 was published on 2020-03-06 and last updated on 2026-06-17.

CVE-2020-5328

CVE-2020-5328 is a critical-severity vulnerability in Dell Emc Isilon Onefs with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Dell Emc Isilon Onefs
Published: 2020-03-06
Last modified: 2026-06-17

Description

Dell EMC Isilon OneFS versions prior to 8.2.0 contain an unauthorized access vulnerability due to a lack of thorough authorization checks when SyncIQ is licensed, but encrypted syncs are not marked as required. When this happens, loss of control of the cluster can occur.

Frequently asked questions

What is CVE-2020-5328?: Dell EMC Isilon OneFS versions prior to 8.2.0 contain an unauthorized access vulnerability due to a lack of thorough authorization checks when SyncIQ is licensed, but encrypted syncs are not marked as required. When this happens, loss of control of the cluster can occur.
How severe is CVE-2020-5328?: CVE-2020-5328 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-5328 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-5328?: CVE-2020-5328 affects Dell Emc Isilon Onefs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-5328?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-5328 published?: CVE-2020-5328 was published on 2020-03-06 and last updated on 2026-06-17.

References

https://www.dell.com/support/security/en-us/details/541423/DSA-2020-039-Dell-EMC-Isilon-OneFS-Security-Update-for-a-SyncIQ-Vulnerability

Affected products (1)

cpe:2.3:a:dell:emc_isilon_onefs:*:*:*:*:*:*:*:*

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