How severe is CVE-2020-5355?

CVE-2020-5355 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2020-5355 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-5355?

CVE-2020-5355 affects Dell Emc Isilon Onefs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-5355?

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

When was CVE-2020-5355 published?

CVE-2020-5355 was published on 2022-10-21 and last updated on 2026-06-17.

CVE-2020-5355

CVE-2020-5355 is a medium-severity vulnerability in Dell Emc Isilon Onefs with a CVSS 3.x base score of 4.3. 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-276.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-276
Affected product: Dell Emc Isilon Onefs
Published: 2022-10-21
Last modified: 2026-06-17

Description

The Dell Isilon OneFS versions 8.2.2 and earlier SSHD process improperly allows Transmission Control Protocol (TCP) and stream forwarding. This provides the remotesupport user and users with restricted shells more access than is intended.

Frequently asked questions

What is CVE-2020-5355?: The Dell Isilon OneFS versions 8.2.2 and earlier SSHD process improperly allows Transmission Control Protocol (TCP) and stream forwarding. This provides the remotesupport user and users with restricted shells more access than is intended.
How severe is CVE-2020-5355?: CVE-2020-5355 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2020-5355 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-5355?: CVE-2020-5355 affects Dell Emc Isilon Onefs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-5355?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-5355 published?: CVE-2020-5355 was published on 2022-10-21 and last updated on 2026-06-17.

References

https://support.emc.com/kb/543561

Affected products (1)

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

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