How severe is CVE-2020-5383?

CVE-2020-5383 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2020-5383 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-5383?

CVE-2020-5383 primarily affects Dell Emc Isilon. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-5383?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-5383 published?

CVE-2020-5383 was published on 2020-08-27 and last updated on 2026-06-17.

CVE-2020-5383

CVE-2020-5383 is a medium-severity vulnerability in Dell Emc Isilon with a CVSS 3.x base score of 5.3. 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-119.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Dell Emc Isilon
Published: 2020-08-27
Last modified: 2026-06-17

Description

Dell EMC Isilon OneFS version 8.2.2 and Dell EMC PowerScale OneFS version 9.0.0 contains a buffer overflow vulnerability in the Likewise component. A remote unauthenticated malicious attacker may potentially exploit this vulnerability to cause a process restart.

Frequently asked questions

What is CVE-2020-5383?: Dell EMC Isilon OneFS version 8.2.2 and Dell EMC PowerScale OneFS version 9.0.0 contains a buffer overflow vulnerability in the Likewise component. A remote unauthenticated malicious attacker may potentially exploit this vulnerability to cause a process restart.
How severe is CVE-2020-5383?: CVE-2020-5383 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2020-5383 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-5383?: CVE-2020-5383 primarily affects Dell Emc Isilon. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-5383?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-5383 published?: CVE-2020-5383 was published on 2020-08-27 and last updated on 2026-06-17.

References

https://www.dell.com/support/security/en-us/details/546005/DSA-2020-189-Dell-EMC-Isilon-OneFS-and-Dell-EMC-PowerScale-Security-Update-for-Buffer-Overflow-Vu

Affected products (2)

cpe:2.3:a:dell:emc_isilon:8.2.2:*:*:*:*:*:*:*
cpe:2.3:o:dell:emc_powerscale_onefs:9.0.0:*:*:*:*:*:*:*

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