Security readout for executives and security teams
Plain-English summary
This is a low-severity information disclosure issue in Dell EMC PowerScale OneFS. A remote user with low privileges may be able to trigger an exceptional condition and see information they should not see. The sources do not describe data type, exploit path, or confirmed exploitation.
Executive priority
Treat as routine vulnerability management unless the affected cluster stores highly sensitive data or is broadly reachable. It is low severity, but storage platforms often contain business-critical information, so version confirmation and vendor-guided remediation should not be skipped.
Technical view
CVE-2021-21592 affects Dell EMC PowerScale OneFS 8.2.x through 9.2.x. It is mapped to CWE-755 and scored CVSS 3.1 at 3.1: network attack vector, high attack complexity, low privileges required, no user interaction, and low confidentiality impact only.
Likely exposure
Organizations running Dell EMC PowerScale OneFS 8.2.x through 9.2.x are the relevant exposure group. Exposure depends on network reachability and availability of a low-privileged account. The bundle does not identify specific configurations, modules, or public-facing services.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. The CVSS vector indicates exploitation is remote but high-complexity and requires low privileges. Public technical detail in the provided sources is limited.
Researcher notes
The provided record is sparse. Do not infer affected endpoints, data classes, or trigger conditions beyond improper exceptional-condition handling. The meaningful constraints are PR:L, AC:H, C:L, and affected OneFS 8.2.x through 9.2.x.
Mitigation direction
- Inventory PowerScale OneFS clusters and versions.
- Review Dell advisory KB 000190408 for fixed versions and remediation guidance.
- Prioritize upgrade or vendor-recommended remediation for affected 8.2.x through 9.2.x systems.
- Restrict network access to OneFS management and user-accessible services where feasible.
- Review low-privileged account access and remove unnecessary accounts.
Validation and detection
- Confirm whether any OneFS deployment runs 8.2.x through 9.2.x.
- Check Dell KB 000190408 for the applicable fixed release or advisory status.
- Verify affected clusters are upgraded or otherwise remediated per Dell guidance.
- Review logs for unusual low-privileged access to sensitive OneFS information.
- Document remaining vulnerable systems, owners, and remediation dates.
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-755: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-21592 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
- Low
- CVSS
- 3.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
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:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N1.61.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
3.1LowVector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.dell.com/support/kbdoc/000190408CVE 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.
Improper Handling of Exceptional Conditions
Improper Handling of Exceptional Conditions represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.