Security readout for executives and security teams
Plain-English summary
CVE-2021-36293 is a Dell VNX2 for File privilege escalation issue. A malicious local administrator could potentially gain higher privileges. Business urgency is moderate because exploitation requires existing high privileges and local access, but successful abuse could affect confidentiality, integrity, and availability of the storage environment.
Executive priority
Treat as a moderate operational risk. It is not described as remotely exploitable, but storage platforms are high-value assets, and an already privileged attacker could potentially escalate impact across sensitive data and availability.
Technical view
Dell VNX2 for File 8.1.21.266 and earlier contains a CWE-78 issue. CVSS 3.1 is 6.4 with local attack vector, high attack complexity, high privileges required, no user interaction, unchanged scope, and high C/I/A impact.
Likely exposure
Exposure appears limited to organizations running Dell VNX2 for File version 8.1.21.266 or earlier. The source bundle does not identify other Dell products or specific deployment configurations.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. The described attacker is a local malicious admin, so this is mainly an insider, compromised-admin, or post-compromise risk.
Researcher notes
Available evidence is sparse. The record names CWE-78 and privilege escalation but does not provide root-cause detail, proof-of-concept status, affected CPEs, or explicit fixed version data in the supplied bundle.
Mitigation direction
- Identify any Dell VNX2 for File systems and record installed versions.
- Review Dell DSA-2021-164 for the vendor-supported update or remediation path.
- Prioritize remediation for internet-managed or broadly administered storage environments.
- Restrict local administrative access to trusted, named administrators only.
- Monitor privileged account activity until vendor remediation is confirmed.
Validation and detection
- Confirm whether any VNX2 for File system is version 8.1.21.266 or earlier.
- Verify Dell advisory remediation has been applied where the product is present.
- Review administrative account membership and remove unnecessary elevated access.
- Check logs for unexpected privilege changes or unusual local admin activity.
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-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. 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 lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-36293 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
- Medium
- CVSS
- 6.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:H/PR:H/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:H/PR:H/UI:N/S:U/C:H/I:H/A:H0.55.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.4MediumVector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.dell.com/support/kbdoc/en-us/000191155/dsa-2021-164-dell-vnx2-control-station-security-update-for-multiple-vulnerabilitiesCVE 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 Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.