Security readout for executives and security teams
Plain-English summary
Dell PowerScale OneFS 8.1.2 can expose sensitive information through log files to a user who already has SSH or console login privileges. This is not described as remote unauthenticated compromise, but it can turn a limited privileged account into broader data exposure risk.
Executive priority
Prioritize this for storage environments handling sensitive business or customer data, especially where many administrators, contractors, or service accounts have SSH or console access. The issue is privileged-local, but storage logs can contain high-value operational information.
Technical view
CVE-2021-21561 is a CWE-532 sensitive information exposure issue in Dell PowerScale OneFS 8.1.2. The CVSS 3.1 score is 7.8 with local attack vector, low complexity, low privileges, no user interaction, unchanged scope, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely on Dell PowerScale OneFS 8.1.2 systems where users or service accounts have ISI_PRIV_LOGIN_SSH or ISI_PRIV_LOGIN_CONSOLE privileges. The provided sources do not identify other affected versions.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Abuse requires an already privileged local login path, but the potential impact is high because sensitive information may be present in logs.
Researcher notes
The evidence names sensitive data exposure in log files and required privileges, but the provided bundle does not include Dell’s detailed fixed versions or workaround text. Validation should stay focused on version exposure, privilege assignment, and vendor advisory confirmation.
Mitigation direction
- Check Dell KB 000191265 for official remediation guidance.
- Prioritize inventory of PowerScale OneFS 8.1.2 deployments.
- Restrict ISI_PRIV_LOGIN_SSH and ISI_PRIV_LOGIN_CONSOLE privileges to required accounts only.
- Review administrative account access and remove stale privileges.
- Treat exposed logs as potentially sensitive until vendor guidance is applied.
Validation and detection
- Confirm whether any PowerScale clusters run OneFS 8.1.2.
- List accounts with ISI_PRIV_LOGIN_SSH or ISI_PRIV_LOGIN_CONSOLE privileges.
- Review log retention and access controls for affected systems.
- Check Dell advisory status before declaring remediation complete.
- Look for unusual privileged log access on affected appliances.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-532: Exact CWE lookup
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Open ATT&CK lookupCVE-2021-21561 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.dell.com/support/kbdoc/000191265CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Insertion of Sensitive Information into Log File
Insertion of Sensitive Information into Log File represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.