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Vulnerability record · CVE-2021-21502 · published 9 February 2021

CVE-2021-21502: Dell emc powerscale onefs improper authentication vulnerability

Dell · Emc Powerscale Onefs

Dell PowerScale OneFS versions 8.1.0 – 9.1.0 contain a "use of SSH key past account expiration" vulnerability. A user on the network with the ISI_PRIV_AUTH_SSH RBAC privilege that has an expired account may potentially exploit this vulnerability, giving them access to the same things they had before account expiration. This may by a high privileged account and hence Dell recommends customers upgrade at the earliest opportunity.

9.8 CVSS 3.1 Critical EPSS 1.4% · top 28.4% CWE-287 · Improper authentication
9.8CVSS 3.1 base score, v2 7.5
1.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Dell PowerScale OneFS versions 8.1.0 – 9.1.0 contain a "use of SSH key past account expiration" vulnerability. A user on the network with the ISI_PRIV_AUTH_SSH RBAC privilege that has an expired account may potentially exploit this vulnerability, giving them access to the same things they had before account expiration. This may by a high privileged account and hence Dell recommends customers upgrade at the earliest opportunity.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2022-45100Dell emc powerscale onefs improper certificate validation vulnerabilityDell PowerScale OneFS, versions 8.2.x-9.3.x, contains an Improper Certificate Validation vulnerability. An remote unauthenticated attacker could pote…EPSS 0.51%9.8CVE-2022-45101Dell emc powerscale onefs improper privilege management vulnerabilityDell PowerScale OneFS 9.0.0.x - 9.4.0.x, contains an Improper Handling of Insufficient Privileges vulnerability in NFS. A remote unauthenticated atta…EPSS 0.82%9.8CVE-2022-34371Dell emc powerscale onefs insufficiently protected credentials vulnerabilityDell PowerScale OneFS, versions 9.0.0 up to and including 9.1.0.19, 9.2.1.12, 9.3.0.6, and 9.4.0.3, contain an unprotected transport of credentials v…EPSS 0.66%9.8CVE-2022-22561Dell emc powerscale onefs improper restriction of authentication attempts vulnerabilityDell PowerScale OneFS, versions 8.2.x-9.3.0.x, contain an improper restriction of excessive authentication attempts. An unauthenticated remote attack…EPSS 1.4%9.8CVE-2022-26852Dell emc powerscale onefs vulnerabilityDell PowerScale OneFS, versions 8.2.x-9.3.x, contain a predictable seed in pseudo-random number generator. A remote unauthenticated attacker could po…EPSS 1.2%9.8CVE-2022-26854Dell emc powerscale onefs broken cryptographic algorithm vulnerabilityDell PowerScale OneFS, versions 8.2.x-9.2.x, contain risky cryptographic algorithms. A remote unprivileged malicious attacker could potentially explo…EPSS 0.74%9.1CVE-2022-26851Dell emc powerscale onefs vulnerabilityDell PowerScale OneFS, 8.2.2-9.3.x, contains a predictable file name from observable state vulnerability. An unprivileged network attacker could pote…EPSS 0.93%9.1CVE-2020-26197Dell emc powerscale onefs inadequate encryption strength vulnerabilityDell PowerScale OneFS 8.1.0 - 9.1.0 contains an LDAP Provider inability to connect over TLSv1.2 vulnerability. It may make it easier to eavesdrop and…EPSS 0.59%

Source: NIST National Vulnerability Database (record CVE-2021-21502), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.