How severe is CVE-2020-26191?

CVE-2020-26191 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-2020-26191 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-26191?

CVE-2020-26191 primarily affects Dell Emc Powerscale Onefs. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-26191?

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-2020-26191 published?

CVE-2020-26191 was published on 2021-02-09 and last updated on 2026-06-17.

CVE-2020-26191

CVE-2020-26191 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-269.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-269
Affected product: Dell Emc Powerscale Onefs
Published: 2021-02-09
Last modified: 2026-06-17

Description

Dell EMC PowerScale OneFS versions 8.1.0 - 9.1.0 contain a privilege escalation vulnerability. A user with ISI_PRIV_JOB_ENGINE may use the PermissionRepair job to grant themselves the highest level of RBAC privileges thus being able to read arbitrary data, tamper with system software or deny service to users.

Frequently asked questions

What is CVE-2020-26191?: Dell EMC PowerScale OneFS versions 8.1.0 - 9.1.0 contain a privilege escalation vulnerability. A user with ISI_PRIV_JOB_ENGINE may use the PermissionRepair job to grant themselves the highest level of RBAC privileges thus being able to read arbitrary data, tamper with system software or deny service to users.
How severe is CVE-2020-26191?: CVE-2020-26191 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-2020-26191 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-26191?: CVE-2020-26191 primarily affects Dell Emc Powerscale Onefs. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-26191?: 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-2020-26191 published?: CVE-2020-26191 was published on 2021-02-09 and last updated on 2026-06-17.

References

https://www.dell.com/support/kbdoc/en-us/000182873/dsa-2021-009-dell-powerscale-onefs-security-update-for-multiple-vulnerabilities

Affected products (8)

cpe:2.3:o:dell:emc_powerscale_onefs:8.1.0:*:*:*:*:*:*:*
cpe:2.3:o:dell:emc_powerscale_onefs:8.1.1:*:*:*:*:*:*:*
cpe:2.3:o:dell:emc_powerscale_onefs:8.1.2:*:*:*:*:*:*:*
cpe:2.3:o:dell:emc_powerscale_onefs:8.2.0:*:*:*:*:*:*:*
cpe:2.3:o:dell:emc_powerscale_onefs:8.2.1:*:*:*:*:*:*:*
cpe:2.3:o:dell:emc_powerscale_onefs:8.2.2:*:*:*:*:*:*:*
cpe:2.3:o:dell:emc_powerscale_onefs:9.0.0:*:*:*:*:*:*:*
cpe:2.3:o:dell:emc_powerscale_onefs:9.1.0:*:*:*:*:*:*:*

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