Security readout for executives and security teams
Plain-English summary
This Dell endpoint issue lets someone who already has local administrator-level access reset BIOS Setup settings to defaults without passing BIOS Administrator authentication. The main business concern is loss of firmware-level security controls and potential device disruption, not remote takeover from the internet.
Executive priority
Treat this as high priority for Dell fleets with broad local admin access or sensitive endpoint hardening requirements. It is less urgent than remotely exploitable flaws, but it can undermine BIOS-level controls after local compromise.
Technical view
CVE-2020-5362 is an improper authorization flaw in the Dell Manageability interface on Dell Client Consumer and Commercial platforms. A local actor with OS administrator privileges could bypass BIOS Administrator authentication to restore BIOS Setup configuration defaults. CVSS 3.1 is 7.1, high, with local attack vector and user interaction required.
Likely exposure
Exposure is limited to affected Dell Client Consumer and Commercial platforms listed by Dell. Risk is most relevant where users, helpdesk tools, malware, or attackers can obtain local administrator rights on managed Dell endpoints.
Exploitation context
The provided sources do not show active exploitation, and KEV is false. Exploitation is described as local, requiring system access with OS administrator privileges and user interaction per CVSS, so this is a post-compromise or insider-risk concern.
Researcher notes
Evidence is limited to the CVE record and Dell reference. Do not infer affected model lists, exploit availability, or specific firmware versions from the bundle alone. The notable mismatch is CVSS PR:N while the description requires OS administrator privileges.
Mitigation direction
- Review Dell advisory SLN321726 for affected models and vendor remediation.
- Inventory Dell endpoints and compare platform and BIOS details against Dell guidance.
- Apply Dell-published updates or mitigations where the advisory identifies affected systems.
- Restrict and monitor local administrator privileges on Dell client endpoints.
- Confirm BIOS security settings after remediation or support workflows.
Validation and detection
- Identify Dell Client Consumer and Commercial endpoints in asset inventory.
- Compare each model and BIOS state with Dell advisory SLN321726.
- Review endpoint management records for BIOS setting resets to defaults.
- Validate local administrator membership and privileged management tooling coverage.
- Confirm remediated devices retain intended BIOS Administrator controls.
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
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CWE-285: Exact CWE lookup
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Open ATT&CK lookupCVE-2020-5362 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
- 7.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:N/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:N/UI:R/S:C/C:L/I:N/A:H1.84.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.1HighVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.dell.com/support/article/SLN321726CVE 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 Authorization
Improper Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.