Security readout for executives and security teams
Plain-English summary
This issue affects Dell BIOS handling of NVMe password attempt limits. A person who already has local administrator access could bypass excessive-attempt mitigations and try brute forcing an NVMe password. The business risk is mainly on managed Dell endpoints where NVMe password protections are relied on for storage access control.
Executive priority
Handle through normal vulnerability management with emphasis on privileged-access hygiene. Escalate priority for fleets where Dell NVMe password controls protect sensitive data, especially shared, high-risk, or administrator-heavy endpoints.
Technical view
CVE-2021-36285 is a CWE-307 improper restriction of excessive authentication attempts issue in Dell CPG BIOS. The CVSS 3.1 score is 5.7 with local attack vector and high privileges required. Successful exploitation could affect confidentiality, integrity, and availability at low impact levels.
Likely exposure
Exposure is limited to Dell systems running affected CPG BIOS versions, but the source bundle does not identify specific models or fixed versions. Organizations with Dell laptops, desktops, or workstations using NVMe password controls should verify applicability through Dell advisory 000191495.
Exploitation context
The CVE requires a local authenticated malicious administrator. The source bundle does not indicate remote exploitation, public exploit availability, or CISA KEV listing. Treat this as an insider, post-compromise, or misconfigured-admin-risk scenario rather than an internet-facing emergency.
Researcher notes
The public bundle provides the vulnerability class, CVSS vector, privilege requirement, and Dell advisory reference, but not model-level affected ranges or remediation text. Avoid asserting exploitability beyond local authenticated administrator abuse of NVMe attempt-limit bypass.
Mitigation direction
- Check Dell advisory 000191495 for affected models and BIOS guidance.
- Apply Dell-approved BIOS updates if the advisory lists them for deployed systems.
- Restrict local administrator access on Dell endpoints to trusted personnel only.
- Review reliance on NVMe passwords as the only storage protection control.
- Monitor privileged endpoint activity for unusual firmware or storage-authentication changes.
Validation and detection
- Inventory Dell systems and record exact model and BIOS version.
- Compare inventory against Dell advisory 000191495 applicability details.
- Confirm whether NVMe password controls are enabled on affected endpoints.
- Review endpoint privilege assignments for unnecessary local administrator rights.
- Document systems requiring vendor BIOS remediation or compensating 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-307: 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 lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-36285 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
- 5.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L
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:H/UI:N/S:C/C:L/I:L/A:L1.53.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.7MediumVector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://www.dell.com/support/kbdoc/000191495/CVE 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 Restriction of Excessive Authentication Attempts
Improper Restriction of Excessive Authentication Attempts represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.