How severe is CVE-2021-21567?

CVE-2021-21567 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-21567 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-21567?

CVE-2021-21567 primarily affects Dell Powerscale Onefs. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-21567?

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

When was CVE-2021-21567 published?

CVE-2021-21567 was published on 2021-08-10 and last updated on 2026-06-17.

CVE-2021-21567

CVE-2021-21567 is a high-severity vulnerability in Dell Powerscale Onefs with a CVSS 3.x base score of 7.8. 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-269.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-269
Affected product: Dell Powerscale Onefs
Published: 2021-08-10
Last modified: 2026-06-17

Description

Dell PowerScale OneFS 9.1.0.x contains an improper privilege management vulnerability. It may allow an authenticated user with ISI_PRIV_LOGIN_SSH and/or ISI_PRIV_LOGIN_CONSOLE to elevate privilege.

Frequently asked questions

What is CVE-2021-21567?: Dell PowerScale OneFS 9.1.0.x contains an improper privilege management vulnerability. It may allow an authenticated user with ISI_PRIV_LOGIN_SSH and/or ISI_PRIV_LOGIN_CONSOLE to elevate privilege.
How severe is CVE-2021-21567?: CVE-2021-21567 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-21567 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-21567?: CVE-2021-21567 primarily affects Dell Powerscale Onefs. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-21567?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-21567 published?: CVE-2021-21567 was published on 2021-08-10 and last updated on 2026-06-17.

References

https://www.dell.com/support/kbdoc/000189495

Affected products (2)

cpe:2.3:o:dell:powerscale_onefs:9.0.0.0:*:*:*:*:*:*:*
cpe:2.3:o:dell:powerscale_onefs:9.1.0.0:*:*:*:*:*:*:*

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