How severe is CVE-2021-21561?

CVE-2021-21561 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-2021-21561 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-21561?

CVE-2021-21561 primarily affects Dell Emc Powerscale Onefs. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-21561?

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-2021-21561 published?

CVE-2021-21561 was published on 2021-11-23 and last updated on 2026-06-17.

CVE-2021-21561

CVE-2021-21561 is a high-severity vulnerability in Dell Emc 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-532.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 2.1
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-532
Affected product: Dell Emc Powerscale Onefs
Published: 2021-11-23
Last modified: 2026-06-17

Description

Dell PowerScale OneFS version 8.1.2 contains a sensitive information exposure vulnerability. This would allow a malicious user with ISI_PRIV_LOGIN_SSH and/or ISI_PRIV_LOGIN_CONSOLE privileges to gain access to sensitive information in the log files.

Frequently asked questions

What is CVE-2021-21561?: Dell PowerScale OneFS version 8.1.2 contains a sensitive information exposure vulnerability. This would allow a malicious user with ISI_PRIV_LOGIN_SSH and/or ISI_PRIV_LOGIN_CONSOLE privileges to gain access to sensitive information in the log files.
How severe is CVE-2021-21561?: CVE-2021-21561 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-2021-21561 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-21561?: CVE-2021-21561 primarily affects Dell Emc Powerscale Onefs. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-21561?: 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-2021-21561 published?: CVE-2021-21561 was published on 2021-11-23 and last updated on 2026-06-17.

References

https://www.dell.com/support/kbdoc/000191265

Affected products (5)

cpe:2.3:o:dell:emc_powerscale_onefs:8.1.2:*:*:*:*:*:*:*
cpe:2.3:o:dell:emc_powerscale_onefs:8.2.2:*:*:*:*:*:*:*
cpe:2.3:o:dell:emc_powerscale_onefs:9.0.0.0:*:*:*:*:*:*:*
cpe:2.3:o:dell:emc_powerscale_onefs:9.1.0.0:*:*:*:*:*:*:*
cpe:2.3:o:dell:emc_powerscale_onefs:9.2.0.0:*:*:*:*:*:*:*

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